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contingency tables

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Information about contingency tables
Education

Published on October 7, 2008

Author: headlessprofessor

Source: authorstream.com

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Two-by-Two : Two-by-Two Contingency Table From the : From the headlessprofessor Rules: each case : Rules: each case must go into a cell Rules: each case : Rules: each case must go into a cell can only go into one cell Separate Groups : Separate Groups Rows for I.V. or predictor Separate Groups : Separate Groups Rows for I.V. or predictor: Male vs. Female Separate Groups : Separate Groups Rows for I.V. or predictor: Male vs. Female Pass vs. Fail Separate Groups : Separate Groups Rows for I.V. or predictor Columns for D.V. or criterion Separate Groups : Separate Groups Rows for I.V. or predictor Columns for D.V. or criterion Vote YES or NO Separate Groups : Separate Groups Rows for I.V. or predictor Columns for D.V. or criterion Vote YES or NO PASS or FAIL test What percent of : What percent of The experimental group passed? What percent of : What percent of The experimental group passed? 100 X A/(A+C) What percent of : What percent of The experimental group passed? 100 X A/(A+B) 100 X 15/20 = 75% What percent of : What percent of The control group passed? What percent of : What percent of The control group passed? 100 X C / (C+D) What percent of : What percent of The control group passed? 100 X C / (C+D) 100 X10 / 30 = 33% Repeated Measures : Repeated Measures Two raters Two times Repeated Measures : Repeated Measures Two raters Interviewers Quality judges Repeated Measures : Repeated Measures Two raters Two times Before vs. After What percent of : What percent of Cases had it the first time? What percent of : What percent of Cases had it the first time? 100 X A / (A+C) What percent of : What percent of Cases had it the first time? 100 X A / (A+C) 100 X 8/10 = 80% What percent of : What percent of Cases had it the second time? What percent of : What percent of Cases had it the second time? 100 X A / (A+C) What percent of : What percent of Cases had it the second time? 100 X A / (A+C) 100 X 8/15 = 53% Two-by-Two : Two-by-Two Contingency Table From the : From the headlessprofessor

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