<p>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. </p>

CC BY-SA 3.0
2016-05-07T19:53:23.837Z
2016-05-07T19:53:23.837Z
Robin Kramer-ten Have
<p>When running a one-way ANOVA, selecting "Post-hoc" and ticking "Bonferroni":</p>

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

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

CC BY-SA 3.0
2016-07-06T12:31:41.630Z
I'm voting to close this question as off-topic because the question belongs on CrossValidated
Robin Kramer-ten Have
<statistics>
In SPSS, should you change the significance level for One way ANOVA post-hocs?
LennaKB
# In SPSS, should you change the significance level for One way ANOVA post-hocs?

(Asked by: username_0 on 2016-05-07)

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)?

**Tags:** statistics

> **Comments:**
> **username_1**: I'm voting to close this question as off-topic because the question belongs on CrossValidated  

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## 1 answers

### Answer by username_1 on 2016-05-07. Score: 3 | Accepted answer

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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