PSYCH 625 MENTOR Education System--psych625mentor.com

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Published on July 7, 2020

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slide 1: PSYCH 625 All Assignments FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Assignment Week 1 Descriptive and Inferential Statistics Worksheet New Syllabus PSYCH 625 Assignment Week 2 Probability and Statistical Analysis Worksheet New Syllabus PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet New Syllabus PSYCH 625 Assignment Week 4 Comparing Means Worksheet New Syllabus PSYCH 625 Assignment Week 5 Correlation Worksheet New Syllabus PSYCH 625 Assignment Week 6 Chi-Square Worksheet New Syllabus PSYCH 625 Week 2 Statistics Project Part 1 Opening Data In Microsoft® Excel® And Running Descriptive Statistics New Syllabus PSYCH 625 Week 3 Statistics Project Part 2 Hypothesis Testing And Two-Group T Tests New Syllabus PSYCH 625 Week 4 Statistics Project Part 3 New Syllabus slide 2: PSYCH 625 Week 5 Statistics Project Part 4 Correlation New Syllabus PSYCH 625 Week 6 Statistics Project Part 5 Presentation New Syllabus PSYCH 625 Assignment Week 1 Descriptive and Inferential Statistics Worksheet New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com Complete both Part A and Part B below. Part A Before completing the following questions be sure to have read Appendix C and the Statistical Software Resources at the ends of Chapters 2 and 3 from Statistics Plain and Simple. Highlight the required answers to the question in your Excel output. 1. Using Microsoft® Excel® enter the following data from the 40 participants by first creating a variable labeled “Score”. Next compute the mean median and mode for the following set of 40 reading scores: slide 3: 2. Imagine you are the assistant manager of a fast food store. Part of your job is to report which special is selling best to the store manager at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the store manager know what happened today. Use the following data. PSYCH 625 Assignment Week 2 Probability and Statistical Analysis Worksheet New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com Probability and Statistical Analysis Worksheet Complete Parts A B and C below. Part A Why is a z score a standard score Why can standard scores be used to compare scores from different distributions Why is it useful to compare different distributions For the following set of scores fill in the cells. The mean is 74.13 and the standard deviation is 9.98. slide 4: Questions 3a through 3d are based on a distribution of scores with ¯X75 and the standard deviation 6.38. Draw a small picture to help you see what is required. PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com Identifying Statistical Tests in the Literature Worksheet Research in the University Library to find three empirical those containing data research articles using one of the analytic methods studied this week i.e. z test independent sample t test repeated measures t test. Select articles that are of interest to you and include the citations at the end of this document. Fill out the following tables and answer each question in 1 to 2 sentences. slide 5: PSYCH 625 Assignment Week 3 Statistics Project Part 2 Hypothesis Testing And Two-Group T Tests New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com Now that you have run descriptive statistics with your data it is time to create a hypothesis and test your hypothesis. This part of the Statistics Project will take you through the process of creating and testing your hypothesis through statistical methods using Microsoft® Excel®. Creating hypotheses provides you the opportunity to think like a researcher and help you understand and critique research articles you read. Create a hypothesis for the Happiness and Engagement Dataset from Part 1 of the Statistics Project. Your hypothesis can be anything based on the variables you have in your dataset. One example: Teaching Method X provides higher test scores than Teaching Method Y. PSYCH 625 Assignment Week 4 Comparing Means Worksheet New Syllabus slide 6: FOR MORE CLASSES VISIT www.psych625mentor.com Comparing Means Worksheet The following questions require that you access Microsoft® Excel® for analysis. The team must work together to solve these questions.The data set for this assignment is located in the Pulse Rate Dataset. 1. John is interested in determining if frequency of exercise affects pulse rate. John randomly samples individuals at a local gym to ask if they will participate in his study. 55 individuals agree and they are divided into three groups of exercisers: 1 high frequency 2 moderate frequency 3 low frequency. Next John measures their pulse after their workout. Do pulse rates differ among individuals who exercise with high frequency versus those who exercise moderately versus those who exercise with low frequency PSYCH 625 Assignment Week 4 Statistics Project Part 3 New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com slide 7: As you get closer to the final project in Week 6 you should have a better idea of the role of statistics in research. This week you will calculate a one-way ANOVA for the independent groups. Reading and interpreting the output correctly is highly important. Most people who read research articles never see the actual output or data they read the results statements by the researcher which is why your summary must be accurate. Consider your hypothesis statements you created in Part 2. PSYCH 625 Assignment Week 5 Correlation Worksheet New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com this is a custom work Contact us at uopashinfogmail.com PSYCH 625 Assignment Week 5 Correlation Worksheet New Syllabus PSYCH 625 Assignment Week 5 Statistics Project Part 4 Correlation New Syllabus slide 8: FOR MORE CLASSES VISIT www.psych625mentor.com For this assignment you will calculate the Pearson product-moment correlations between at least two sets of variables in the Happiness and Engagement Dataset. Perform one correlation between two independent variables such as Age and Relationship with Coworkers. Perform the second correlation on an independent variable such as Relationship with Direct Supervisor and the dependent variable such as Workplace Happiness Rating. PSYCH 625 Assignment Week 6 Chi-Square Worksheet New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com slide 9: Chi-Square Worksheet Part 1: Interpret Chi-Square Results Review the following output from a chi-square test and answer the questions below. Chi-Square Test Frequencies: a 0 cells 0.0 have expected frequencies less than 5. The minimum expected cell frequency is 20.0. PSYCH 625 Assignment Week 6 Statistics Project Part 5 Presentation New Syllabus FOR MORE CLASSES VISIT www.psych625mentor.com You have made it to the final step of your individual project. In this assignment you will develop the skills needed to compile statistics as a part of the research process. Imagine you must present your research findings to your Human Resources department. slide 10: Create a 12- to 15-slide Microsoft® PowerPoint® presentation discussing your analysis of the data. Include the following in your presentation: PSYCH 625 Entire Course FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet PSYCH 625 Week 1 Individual Assignment Reliability and Validity Matrix PSYCH 625 Week 1 Individual Assignment Time to Practice – Week One PSYCH 625 Week 2 Individual Assignment Time to Practice – Week Two PSYCH 625 Week 2 Learning Team Assignment Statistics Project Import Data Into IBM ® SPSS ® Software slide 11: PSYCH 625 Week 3 Individual Assignment Time to Practice – Week Three PSYCH 625 Week 3 Learning Team Assignment Hypothesis Testing Problem Worksheet PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics PSYCH 625 Week 4 Individual Assignment Time to Practice – Week Four PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means PSYCH 625 Week 5 Individual Assignment Programmatic Assessment Time to Practice – Week Five PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations PSYCH 625 Week 6 Individual Assignment Overview of Important Statistical Tests PSYCH 625 Week 6 Learning Team Assignment Statistics Project Presentation PSYCH 625 Week 1 DQs slide 12: FOR MORE CLASSES VISIT www.psych625mentor.com DQ 1: As we begin our venture into statistics lets pause to examine the role of research in psychology. Psychology is the science of behavior. We think of psychology as counseling introspection learning cognition etc. How can these processes be the subject of research How do we reconcile the discipline and rigor of good research with the ambiguity of human emotions and motivations What is the role of research in psychology DQ 2: Many people feel nervous around math but what we really need to fear is the selective interpretation of data For most of us 1 + 1 2 but in the hands of some 1 + 1 can be "spun" to support specific agenda. Think about commercials or news clips that you may have seen recently. In what subtle ways might data have been used to influence the listener/viewer For example when we hear "Four out of five dentists recommend Glittering Grin toothpaste" is it correct to assume that 100 dentists were polled and 80 voted for Glittering Grin PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet slide 13: FOR MORE CLASSES VISIT www.psych625mentor.com Complete the following questions. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines. What are statistics and how are they used in the behavioral sciences Your answer should be 100 to 200 words. Differentiate between descriptive and inferential statistics. What information do they provide What are their similarities and differences Your answer should be 250 to 400 words. What is a population What is a sample How are they similar and how are they different When would you use one or the other Your answer should be 250 to 400 words. Go to the library and find a journal article in your area of interest that contains empirical data but does not contain any visual representation of the data. Use the data to create a chart. Specify what type of chart you are creating and why you chose the one you did. You can create the chart manually or using IBM® SPSS® software or a Microsoft® Excel® document. The chart may be pasted into this document or submitted as an attachment with this document. slide 14: PSYCH 625 Week 1 Individual Assignment Reliability and Validity Matrix FOR MORE CLASSES VISIT www.psych625mentor.com For each of the tests of reliability and validity listed on the matrix prepare a 50- to 100-word description of the test’s application. Describe what conditions these reliability types would be used for as well as when they would be inappropriate. Then for each test prepare a 50- to 100-word description of the strengths and a 50- to 100-word description of the weaknesses. PSYCH 625 Week 1 Individual Assignment Time to Practice – Week One FOR MORE CLASSES VISIT www.psych625mentor.com slide 15: Part A Some questions in Part A require that you access data from Statistics for People Who Think They Hate Statistics. This data is available on the student website under the Student Test Resources link. 1. By hand compute the mean median and mode for the following set of 40 reading scores 2. Compute the means for the following set of scores saved as Ch. 2 Data Set 3 using IBM® SPSS® Print out a copy of the output. 3. You are the manager of a fast food store. Part of your job is to report which special is selling best to the boss at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the boss know what happened today. Use the following data. Do not use IBM® SPSS® software to compute the statistics needed rather do it by hand. Include a copy of your work 4. Suppose you are working with a data set that has some different much larger or much smaller than the rest of the data scores. What measure of central tendency would you use and why 5. For the following set of scores compute the range the unbiased and the biased standard deviations and the variance. Do the exercise by hand 6. Use IBM® SPSS® software to compute all the descriptive statistics for the following set of three test scores over the course of a slide 16: semester. Which test had the highest average score Which test had the smallest amount of variability 7. This practice problem uses the data contained in the file named Ch. 3 Data Set 3. There are two variables in this data set 8. Review the following frequency distribution. Create a histogram either by hand or by using some other application such as a Microsoft® Excel® document 9. A third-grade teacher is looking to improve her students’ level of engagement during group discussions and instruction. She keeps track of each of the 15 third graders’ number of responses every day for 1 week. This information is available in Ch. 4 Data Set 2. Use IBM® SPSS® software to create a bar chart one bar for each day. 10. Identify whether these distributions are negatively skewed positively skewed or not skewed at all and why 11. For each of the following indicate whether you would use a pie line or bar chart and why Part B Complete the questions below. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines Salkind 2011 describes statistics as a ―set of tools‖ p. 18. How do behavioral scientists use those tools How would you use descriptive statistics to report the effectiveness of a baseball team How would you use inferential statistics to slide 17: report the effectiveness of a baseball team In this example what is the sample and what is the population What does a measure of central tendency tell us about a data set Identify the three common measures of central tendency used in descriptive statistics and give an example of each. How do you calculate them What is variability in a data set Identify three measures of variability used in descriptive statistics explain how to calculate each and give an example of each PSYCH 625 Week 2 DQs FOR MORE CLASSES VISIT www.psych625mentor.com DQ 1: More and more we are asked to document impact and to measure outcomes. We are asked to provide information about a variety of things through as many varieties of ways. When we go to stores and they ask us for a zip code or phone number. The list could go on and on. You text talks about descriptive statistics and suggests that they are used to make a group of numbers slide 18: understandable in a research study. While that is certainly the case we use descriptive statistics in a number of other ways. DQ 2: Research in the library a journal article that is in your area of interest in which reliability and validity data are reported. Discuss the outcome measures that are used. Identify the type of reliability that was established and the type of validity. Comment on whether you think the levels are acceptable. If not how can they be improved PSYCH 625 Week 2 Individual Assignment Time to Practice – Week Two FOR MORE CLASSES VISIT www.psych625mentor.com Complete Parts A B and C below. Part A Some questions in Part A require that you access data from Statistics for People Who Think They Hate Statistics. This data is slide 19: available on the student website under the Student Text Resources link. 1. Why is a z score a standard score Why can standard scores be used to compare scores from different distributions 2.For the following set of scores fill in the cells. The mean is 70 and the standard deviation is 8 3. Questions 3a through 3d are based on a distribution of scores with and the standard deviation 6.38. Draw a small picture to help you see what is required 4. Jake needs to score in the top 10 in order to earn a physical fitness certificate. The class mean is 78 and the standard deviation is 5.5. What raw score does he need 5. Who is the better student relative to his or her classmates Use the following table for information Part B Some questions in Part B require that you access data from Using SPSS for Windows and Macintosh. This data is available on the student website under the Student Text Resources link. The data for Exercises 6 and 7 are in the data file named Lesson 20 Exercise File 1. Answer Exercises 6 and 7 based on the following research problem: Ann wants to describe the demographic characteristics of a sample of 25 individuals who completed a large-scale survey. She has demographic data on the participants’ gender two categories slide 20: educational level four categories marital status three categories and community population size eight categories. 6. Using IBM® SPSS® software conduct a frequency analysis on the gender and marital status variables. From the output identify the following 7. Using IBM® SPSS® software create a frequency table to summarize the data on the educational level variable 8. David collects anxiety scores from 15 college students who visit the university health center during finals week. Compute descriptive statistics on the anxiety scores. From the output identify the following Part C Complete the questions below. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines What is the relationship between reliability and validity How can a test be reliable but not valid Can a test be valid but not reliable Why or why not How does understanding probability help you understand statistics How could you use standard scores and the standard distribution to compare the reading scores of two students receiving special reading slide 21: resource help and one student in a standard classroom who does not get special help In a standard normal distribution: What does a z score of 1 represent What percent of cases fall between the mean and one standard deviation above the mean What percent fall between the mean and –1 to +1 standard deviations from the mean What percent of scores will fall between –3 and +3 standard deviations under the normal curve PSYCH 625 Week 2 Learning Team Assignment Statistics Project Import Data Into IBM ® SPSS ® Software FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Week 2 Learning Team Assignment Statistics Project Import Data Into IBM ® SPSS ® Software slide 22: PSYCH 625 Week 3 DQs FOR MORE CLASSES VISIT www.psych625mentor.com DQ 1: Please read the following article in your Electronic Readings Null Hypothesis CLOSED THINKING: Without scientific competition and open debate much psychology research goes nowhere DQ 2: It is suggested that significance tests should be banned for two reasons 1 that there is a tendency for researchers to accept the null hypothesis as true because the result is not significant and 2 significance is confused with a large effect size. Would you agree that testing the significance of a result may lead to faulty assumptions about accepting the null hypothesis slide 23: PSYCH 625 Week 3 Individual Assignment Time to Practice – Week Three FOR MORE CLASSES VISIT www.psych625mentor.com Complete both Part A and Part B below. Part A Some questions in Part A require that you access data from Statistics for People Who Think They Hate Statistics. This data is available on the student website under the Student Test Resources link. 1. For the following research questions create one null hypothesis one directional research hypothesis and one nondirectional research hypothesis What are the effects of attention on out-of-seat classroom behavior What is the relationship between the quality of a marriage and the quality of the spouses’ relationships with their siblings What is the best way to treat an eating disorder 2. Provide one research hypothesis and an equation for each of the following topics slide 24: The amount of money spent on food among undergraduate students and undergraduate student-athletes The average amount of time taken by white and brown rats to get out of a maze The effects of Drug A and Drug B on a disease The time to complete a task in Method 1 and Method 2 3. Why does the null hypothesis presume no relationship between variables 4. Create a research hypothesis tested using a one-tailed test and a research hypothesis tested using a two-tailed test 5. What does the critical value represent 6. Given the following information would your decision be to reject or fail to reject the null hypothesis Setting the level of significance at .05 for decision making provide an explanation for your conclusion The null hypothesis that there is no relationship between the type of music a person listens to and his crime rate p .05 The null hypothesis that there is no relationship between the amount of coffee consumption and GPA p .62 The null hypothesis that there is a negative relationship between the number of hours worked and level of job satisfaction p .51 slide 25: 7. Why is it harder to find a significant outcome all other things being equal when the research hypothesis is being tested at the .01 rather than the .05 level of significance 8. Why should we think in terms of ―failing to reject‖ the null rather than just accepting it 9. When is it appropriate to use the one-sample z test 10. What similarity does a z test have to a simple z or standard score 11. For the following situations write out a research hypothesis Bob wants to know if the weight loss for his group on the chocolate- only diet is representative of weight loss in a large population of middle-aged men The health department is charged with finding out if the rate of flu per thousand citizens for this past flu season is comparable to the average rate of the past 50 seasons Blair is almost sure that his monthly costs for the past year are not representative of his average monthly costs over the past 20 years 12. There were about 15 flu cases per week this flu season in the Oshkosh school system. The weekly average for the entire state is 16 and the standard deviation is 2.35. Are the kids in Oshkosh as sick as the kids throughout the state Part B Complete the following questions. Be specific and provide examples when relevant. slide 26: Cite any sources consistent with APA guidelines The average raw math achievement score for third graders at a Smith elementary school is 137 third graders statewide score an average of 124 with a standard deviation of 7. Are the Smith third graders better at math than third graders throughout the state Perform the correct statistical test applying the eight steps of the hypothesis testing process as demonstrated on pp. 185–187 of Statistics for People Who Think they Hate Statistics What is a research question that you would like to answer Write the null and research hypotheses. Would you use a one- or two- tailed test Why What do we mean when we say that a statistical result is significant What is the difference between a statistically significant and a meaningful result Why is statistical significance important Describe a Type I error for the previous study that compares third graders’ math achievement. Describe a Type II error for that study PSYCH 625 Week 3 Learning Team Assignment Hypothesis Testing Problem Worksheet FOR MORE CLASSES VISIT www.psych625mentor.com slide 27: Research in the University Library to find five empirical those containing data research articles. Select articles that are of interest to you and include the citations at the end of this document. Place the information for each one in the following tables: Title of Article: Question Answer What is the null hypothesis implied or explicitly stated What is the research hypothesis implied or explicitly stated Using the content in any of these articles create another research hypothesis. Title of Article: Question Answer What is the null hypothesis implied or explicitly stated What is the research hypothesis implied or explicitly stated Using the content in any of these articles create another research hypothesis. Title of Article: slide 28: Question Answer What is the null hypothesis implied or explicitly stated What is the research hypothesis implied or explicitly stated Using the content in any of these articles create another research hypothesis. Title of Article: Question Answer What is the null hypothesis implied or explicitly stated What is the research hypothesis implied or explicitly stated Using the content in any of these articles create another research hypothesis. Title of Article: Question Answer What is the null hypothesis implied or explicitly stated What is the research hypothesis implied or explicitly stated Using the content in any of these articles create another research hypothesis. slide 29: PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics PSYCH 625 Week 4 DQs FOR MORE CLASSES VISIT www.psych625mentor.com WEEK 4: slide 30: DQ 1: What is a research question each of you would like to research  What are independent and dependent variables  What would your hypothesis be  Using the decision tree on page 255 of Statistics for People Who think they Hate Statistics as a resource identify which statistical test you would use to test your hypothesis.  Tell us why you selected that particular test. DQ 2: Lets take some time this week and look at some data that is used to make up reports through the Anne E. Casey Foundation. The Foundation published a document called Kids Count which is a collection of significant information about risk factors for kids. Please go to the Foundations website at www.aecf.org find the information for your state review some of the key data tell us what you might use the data for and what are some of the problems with the data especially as you look at census data atwww.census.gov Datafinder in comparison to kids count data. PSYCH 625 Week 4 Individual Assignment Time to Practice – Week Four FOR MORE CLASSES VISIT slide 31: www.psych625mentor.com Complete Parts A B and C below. Part A Some questions in Part A require that you access data from Statistics for People Who Think They Hate Statistics. This data is available on the student website under the Student Text Resources link. 1. Using the data in the file named Ch. 11 Data Set 2 test the research hypothesis at the .05 level of significance that boys raise their hands in class more often than girls. Do this practice problem by hand using a calculator. What is your conclusion regarding the research hypothesis Remember to first decide whether this is a one- or two-tailed test 2. Using the same data set Ch. 11 Data Set 2 test the research hypothesis at the .01 level of significance that there is a difference between boys and girls in the number of times they raise their hands in class. Do this practice problem by hand using a calculator. What is your conclusion regarding the research hypothesis You used the same data for this problem as for Question 1 but you have a different hypothesis one is directional and the other is nondirectional. How do the results differ and why 3. Practice the following problems by hand just to see if you can get the numbers right. Using the following information calculate the t test statistic slide 32: 4. Using the results you got from Question 3 and a level of significance at .05 what are the two-tailed critical values associated with each Would the null hypothesis be rejected 5. Using the data in the file named Ch. 11 Data Set 3 test the null hypothesis that urban and rural residents both have the same attitude toward gun control. Use IBM® SPSS® software to complete the analysis for this problem 6. A public health researcher tested the hypothesis that providing new car buyers with child safety seats will also act as an incentive for parents to take other measures to protect their children such as driving more safely child-proofing the home and so on. Dr. L counted all the occurrences of safe behaviors in the cars and homes of the parents who accepted the seats versus those who did not. The findings: a significant difference at the .013 level. Another researcher did exactly the same study everything was the same— same type of sample same outcome measures same car seats and so on. Dr. R’s results were marginally significant recall Ch. 9 at the .051 level. Which result do you trust more and why 7. In the following examples indicate whether you would perform a ttest of independent means or dependent means Two groups were exposed to different treatment levels for ankle sprains. Which treatment was most effective A researcher in nursing wanted to know if the recovery of patients was quicker when some received additional in-home care whereas when others received the standard amount slide 33: A group of adolescent boys was offered interpersonal skills counseling and then tested in September and May to see if there was any impact on family harmony One group of adult men was given instructions in reducing their high blood pressure whereas another was not given any instructions One group of men was provided access to an exercise program and tested two times over a 6-month period for heart health 8. For Ch. 12 Data Set 3 compute the t value and write a conclusion on whether there is a difference in satisfaction level in a group of families’ use of service centers following a social service intervention on a scale from 1 to 15. Do this exercise using IBM® SPSS® software and report the exact probability of the outcome 9. Do this exercise by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most 10. Using the following table provide three examples of a simple one-way ANOVA two examples of a two-factor ANOVA and one example of a three-factor ANOVA. Complete the table for the missing examples. Identify the grouping and the test variable 11. Using the data in Ch. 13 Data Set 2 and the IBM® SPSS® software compute the F ratio for a comparison between the three levels representing the average amount of time that swimmers practice weekly 15 15–25 and 25 hours with the outcome variable being their time for the 100-yard freestyle. Does practice slide 34: time make a difference Use the Options feature to obtain the means for the groups 12. When would you use a factorial ANOVA rather than a simple ANOVA to test the significance of the difference between the averages of two or more groups 13. Create a drawing or plan for a 2 × 3 experimental design that would lend itself to a factorial ANOVA. Identify the independent and dependent variables Part B Some questions in Part B require that you access data from Using SPSS for Windows and Macintosh. This data is available on the student website under the Student Text Resources link. The data for Exercise 14 is in the data file named Lesson 22 Exercise File 1. 14. John is interested in determining if a new teaching method the involvement technique is effective in teaching algebra to first graders. John randomly samples six first graders from all first graders within the Lawrence City School System and individually teaches them algebra with the new method. Next the pupils complete an eight-item algebra test. Each item describes a problem and presents four possible answers to the problem. The scores on each item are 1 or 0 where 1 indicates a correct response and 0 indicates a wrong response. The IBM® SPSS® data file contains six cases each with eight item scores for the algebra test. Conduct a one-sample t test on the total scores. On the output identify the following slide 35: PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means PSYCH 625 Week 5 DQs FOR MORE CLASSES VISIT www.psych625mentor.com DQ 1: Thomas Bayes who was an English Clergyman in the early 18th century who is known for the Bayes Theorem. The theorem slide 36: suggests that science is about conducting research in order to adjust our preexisting beliefs in light of the evidence collected. Conclusions drawn from an experiment are always in the context of what we believed about the world before the experiment. Others suggest that it is better not to make any assumptions about prior beliefs. Aron Aron Coups 2006 Where do you weigh in on this debate Do you think we do research in order to validate something we already believe to be true or false DQ 2: When two variables are correlated it means that they are associated with one another. But if they are associated with one another then why doesnt one cause the other PSYCH 625 Week 5 Individual Assignment Programmatic Assessment Time to Practice – Week Five FOR MORE CLASSES VISIT www.psych625mentor.com Complete Parts A B and C below. Part A slide 37: Some questions in Part A require that you access data from Statistics for People Who Think They Hate Statistics. This data is available on the student website under the Student Text Resources link. 1. Use the following data to answer Questions 1a and 1b Compute the Pearson product-moment correlation coefficient by hand and show all your work Construct a scatterplot for these 10 values by hand. Based on the scatterplot would you predict the correlation to be direct or indirect Why 2. Rank the following correlation coefficients on strength of their relationship list the weakest first 3. Use IBM® SPSS® software to determine the correlation between hours of studying and grade point average for these honor students. Why is the correlation so low 4. Look at the following table. What type of correlation coefficient would you use to examine the relationship between ethnicity defined as different categories and political affiliation 5. When two variables are correlated such as strength and running speed it also means that they are associated with one another. But if they are associated with one another then why does one not cause the other slide 38: 6. Given the following information use Table B.4 in Appendix B of Statistics for People Who Think They Hate Statistics to determine whether the correlations are significant and how you would interpret the results The correlation between speed and strength for 20 women is .567. Test these results at the .01 level using a one-tailed test The correlation between the number correct on a math test and the time it takes to complete the test is –.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one- or a two-tailed test and justify your choice The correlation between number of friends and grade point average GPA for 50 adolescents is .37. Is this significant at the .05 level for a two-tailed test 7. Use the data in Ch. 15 Data Set 3 to answer the questions below. Do this one manually or use IBM® SPSS® software Compute the correlation between income and level of education Test for the significance of the correlation What argument can you make to support the conclusion that lower levels of education cause low income 8. Use the following data set to answer the questions. Do this one manually Compute the correlation between age in months and number of words known slide 39: Test for the significance of the correlation at the .05 level of significance Recall what you learned in Ch. 5 of Salkind 2011 about correlation coefficients and interpret this correlation 9. How does linear regression differ from analysis of variance 10. Betsy is interested in predicting how many 75-year-olds will develop Alzheimer’s disease and is using level of education and general physical health graded on a scale from 1 to 10 as predictors. But she is interested in using other predictor variables as well. Answer the following questions What criteria should she use in the selection of other predictors Why Name two other predictors that you think might be related to the development of Alzheimer’s disease With the four predictor variables level of education general physical health and the two new ones that you name draw out what the model of the regression equation would look like 11. Joe Coach was curious to know if the average number of games won in a year predicts Super Bowl performance win or lose. The x variable was the average number of games won during the past 10 seasons. The y variable was whether the team ever won the Super Bowl during the past 10 seasons. Refer to the following data set How would you assess the usefulness of the average number of wins as a predictor of whether a team ever won a Super Bowl slide 40: What’s the advantage of being able to use a categorical variable such as 1 or 0 as a dependent variable What other variables might you use to predict the dependent variable and why would you choose them Part B Some questions in Part B require that you access data from Using SPSS for Windows and Macintosh. This data is available on the student website under the Student Text Resources link. The data for this exercise is in the data file named Lesson 33 Exercise File 1. Peter was interested in determining if children who hit a bobo doll more frequently would display more or less aggressive behavior on the playground. He was given permission to observe 10 boys in a nursery school classroom. Each boy was encouraged to hit a bobo doll for 5 minutes. The number of times each boy struck the bobo doll was recorded bobo. Next Peter observed the boys on the playground for an hour and recorded the number of times each boy struck a classmate peer. Conduct a linear regression to predict the number of times a boy would strike a classmate from the number of times the boy hit a bobo doll. From the output identify the following Slope associated with the predictor Additive constant for the regression equation Mean number of times they struck a classmate slide 41: Correlation between the number of times they hit the bobo doll and the number of times they struck a classmate Standard error of estimate Part C Complete the questions below. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines Draw a scatterplot of each of the following: A strong positive correlation A strong negative correlation A weak positive correlation A weak negative correlation Give a realistic example of each What is the coefficient of determination What is the coefficient of alienation Why is it important to know the amount of shared variance when interpreting both the significance and the meaningfulness of a correlation coefficient If a researcher wanted to predict how well a student might do in college what variables do you think he or she might examine What statistical procedure would he or she use slide 42: What is the meaning of the p value of a correlation coefficient PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations

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