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When running a one-way ANOVA, selecting "Post-hoc" and ticking "Bonferroni":

There is a box at the bottom which says "significance level" and the default is 0.05.

My question is: should I leave the default value (assuming SPSS adjusts accordingly) or change the value to 0.05/k (k groups)?

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closed as off-topic by Robin Kramer, Krysta, AliceD, huh, Seanny123 Jul 6 '16 at 19:15

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    $\begingroup$ I'm voting to close this question as off-topic because the question belongs on CrossValidated $\endgroup$ – Robin Kramer Jul 6 '16 at 12:31
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Leave it at 0.05 . SPSS corrects it properly. Only when you want to test with different alpha's (.10 or 0.01 e.g.) you should change it.

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