Hello all,

I would like to know how to perform a Bonferroni correction with a t test for independent groups in SPSS.

Thank you!

If you use One-way ANOVA, you can choose a post hoc test that includes a multiple testing adjustment. CTABLES also can do a Bonferroni adjustment for comparing means for appropriate tables.

More generally, if you install the STATS ADJUST extension command via Extensions > Extension Hug, you can use that command to adjust multiple tests by any of six methods, including Bonferroni.

Thanks a lot!

Hello again,

if I do the ANOVA, it shows me that it can't perform the post hoc test because I need three variables. How can I change this?

Thanks again

There is no requirement for three variables in ANOVA. You can do it with just one variable. You do have to have at least three groups for post hoc tests, however. If you have just two groups but multiple variables to test, then you can use the STATS PADJUST procedure or, since the Bonferroni correction is very simple, just calculate it manually

The Bonferroni Correction Method Explained (toptipbio.com)