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G*Power Statistical Power Analyses for Windows and Mac is a program which helps with calculating the power of some statistical tests.

1 vote
1 answer
230 views

Noncentrality parameter Repeated-Measures ANOVA - formula vs. G*Power

On page 34, it notes that: $$\lambda_{gpower} = \frac{knf^2}{(1-\bar{\rho})} = k\lambda_{ws},$$ so the two are off by a factor $k$. My question therefore is: which one is correct? … @dipetkov's answer below I was able to see for myself that the G*Power and Potvin & Schutz formulas are identical (I will maintain $k$ to denote the number of trials; @dipetkov used $q$): $$\lambda_{gpower
1 vote
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231 views

Different results for simulated and closed form distribution of T-statistic under the altern...

While running some simulations to get a better grasp of the concept of statistical power I stumbled upon an unexpected result. I was trying to simulate the sampling distribution of test statistic $T$ …