Information about 01a Mean, Median, Mode For the TI 84

Published on August 26, 2008

Author: sadiesattic

Source: slideshare.net

Chapter 1.1a

Vocabulary Minimum : Lowest value in data set (lower extreme) Shown on Calculator as Min Maximum: Largest value in data set (Upper extreme) Shown on Calculator as Max Chapter 1 Bitsy Griffin

Minimum :

Lowest value in data set (lower extreme)

Shown on Calculator as Min

Maximum:

Largest value in data set (Upper extreme)

Shown on Calculator as Max

Vocabulary Range: Difference between max & min values Caution: Min and Max are not the first and last values! (you have to order the values first!) Chapter 1 Bitsy Griffin

Range:

Difference between max & min values

Caution:

Min and Max are not the first and last values! (you have to order the values first!)

Vocabulary Quartiles: Divides data into four sets (after ordering from least to greatest) Q1 – Quartile 1 (Lower quartile) Med – Quartile 2 (Median) Q3 – Quartile 3 (Upper quartile) InterQuartile Range Middle 50% (falls between Q1 & Q3) Chapter 1 Bitsy Griffin

Quartiles:

Divides data into four sets (after ordering from least to greatest)

Q1 – Quartile 1 (Lower quartile)

Med – Quartile 2 (Median)

Q3 – Quartile 3 (Upper quartile)

InterQuartile Range

Middle 50% (falls between Q1 & Q3)

FOR FINDING MEAN, MEDIAN, QUARTILES, RANGE ON CALCULATOR (TI83/84) Tech Manual Chapter 1 Bitsy Griffin

Steps Enter a list Hit Stat key Choose edit Enter data in list 1 (push enter after each value) Chapter 1 Bitsy Griffin

Enter a list

Hit Stat key

Choose edit

Enter data in list 1 (push enter after each value)

Steps Using the Info Hit Stat Choose Calc Choose 1: 1-Var Push Enter twice Chapter 1 Bitsy Griffin

Using the Info

Hit Stat

Choose Calc

Choose 1: 1-Var

Push Enter twice

1-Var Stats Mean Top number listed Scroll down for everything else. They are all listed Do the appropriate math to find the range. Chapter 1 Bitsy Griffin

Mean

Top number listed

Scroll down for everything else.

They are all listed

Do the appropriate math to find the range.

Steps to find Mode Hit the Stat key Choose 2: SortA( Hit 2 nd , then hit #1 This enters L1 to be sorted Hit Enter Calculator shows Done The list has been put in order. To look at the ordered list: Hit Stat -- Edit Find mode in list by comparing the numbers of each piece of data. Chapter 1 Bitsy Griffin

Hit the Stat key

Choose 2: SortA(

Hit 2 nd , then hit #1

This enters L1 to be sorted

Hit Enter

Calculator shows Done

The list has been put in order.

To look at the ordered list:

Hit Stat -- Edit

Find mode in list by comparing the numbers of each piece of data.

Clear old data Clearing the old data out is important so you can start new lists. Go to the List Steps: Hit the up arrow Hit Clear Hit Enter Chapter 1 Bitsy Griffin

Clearing the old data out is important so you can start new lists.

Go to the List

Steps:

Hit the up arrow

Hit Clear

Hit Enter

Practice #1, 3, 5, 7 Chapter 1 Bitsy Griffin Problem 1 Mean ≈ 18.67 Q1=15 Median=18.5 Q3=22 Range=12 Mode=none Problem 3 Mean = 8.625 Q1=6 Median=8.5 Q3=10 Range=10 Mode=6 & 10

Problem 1

Mean ≈ 18.67

Q1=15

Median=18.5

Q3=22

Range=12

Mode=none

Problem 3

Mean = 8.625

Q1=6

Median=8.5

Q3=10

Range=10

Mode=6 & 10

Assignment Complete problems not covered in class Chapter 1 Bitsy Griffin

Complete problems not covered in class

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