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in Use of WebPower by IndyS (120 points)
hi there,

i used one way between groups ANOVA for my data, 3 groups, the overall result was non significant, so I did not follow any planned contrasts ( 2 planned contrasts).

however, I was told that I may need to run 2 a priori analysis   for indenpendent samples t test for two groups, two tailed , but because the data is already collected then I have to run sensitivity power based on the sample I was given. I have 2 effect size for both groups ( anger group 0.08, fear group, 0.10)

I uploaded my data file www.webpower.psychstat.org/models/means03/effectsize.php

regards

1 Answer

0 votes
by johnny (2.6k points)
The question needs clarification but you can calculate your effect size based on t-test for power analysis.
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