lecture_08 - Two-Way Contingency Tables Lecture 08 ILRST...

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    Two-Way Contingency Tables Lecture 08 ILRST 411
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               Residuals A cell by cell comparison of observed and estimated  frequencies helps us to understand the nature of evidence. For the test of independence, useful cell residuals have the  form   n ij  -    ij  /      ij ( 1- p i+ ) (1-p +j ) These are called adjusted residuals. An adjusted residual about 2 or 3 in absolute value indicates  lack of fit of Ho in that cell. µ µ
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                   Residuals                                 Party identification                    Gender Democrat Independent Republican Females 279 73 225 Males 165 47 191
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                  Residuals Hence calculate adjusted residual for every cell. If the cells are showing greater discrepancy between 
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