You can find an option for Bonferroni running post-hoc tests for ANOVA. As far as I know, you can't use Bonferroni under T-TEST command.
Is it possible to do Paired Sample T-tests with Bonferroni Adjustment?
Here are the steps I take in SPSS for the Paired Sample t-test:
Analyze - Compare Means - Paired Sample T Tests - and then I move over my variables of interests. (No place to indicate that I want Bonferroni Adj)
Should I use a One-Way ANOVA instead?
You can find an option for Bonferroni running post-hoc tests for ANOVA. As far as I know, you can't use Bonferroni under T-TEST command.
you can use the correction on multiple t-tests.
(very) generally if your sample size is <30 use t-tests.
Phil
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