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SPSS t-Tests

Lecture Set 21

GRE Therapy Data File

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Independent Groups t-Tests in SPSS

� Requesting the t-Test

� Analyze

� Compare Means

� Independent Groups T Test…

Independent Groups t-Tests in SPSS

� Popup Window

� Move desired DVs and IV from left to right

� Can do more than one t-Test simultaneously, if comparing same groups

� Define Groups… (BE CAREFUL!!!)

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Independent Groups t-Tests in SPSS

� Output

� Ignore Levene’sTest and assume Equal Variances

Correlated Samples t-Tests in SPSS

� Requesting the t-Test

� Analyze

� Compare Means

� Paired Samples T Test…

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Correlated Groups t-Tests in SPSS

� Popup Window

� Holding down CTRL, select desired conditions on left

� Click purple button to move to right

Correlated Groups t-Tests in SPSS

� Output

� Note N is the total