Generally you should do the power analysis before collecting any data.
Since you have results it looks like you already have the data
collected.
But if you want to compute the power for a future study, one option is
to use simulation.
1. decide what the data will look like
2. decide how you will
Hello,
I am running a non parametric repeated measures experiment with
Friedman’s test:
Friedman rank sum test
data: glikozi and week and subject
Friedman chi-squared = 18.538, df = 3, p-value = 0.0003405
How could I run a power analysis for this test in R?
Thank you!
--
George Kara
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