## Probability to pass multiple studies [Power / Sample Size]

Dear all (and esp. our expert in probability zizou),

say, we have

Let’s keep it simple: T/R-ratios and CVs are identical in studies 1…

Or does each study stand on its own and we don’t have to care?

say, we have

*n*studies, each powered at 90%. What is the probability (*i.e.*, power) that*all*of them pass BE?Let’s keep it simple: T/R-ratios and CVs are identical in studies 1…

*n*. Hence,*p*(1) = … =*p*(*n*). If the outcomes of studies are independent, is*p*(pass all) = Π*p*(*i*),*e.g.*, for*p*(*i*=1…6) = 0.90 = 0.90^{6}~ 0.53?Or does each study stand on its own and we don’t have to care?

—

Helmut Schütz

The quality of responses received is directly proportional to the quality of the question asked. 🚮

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*Dif-tor heh smusma*🖖Helmut Schütz

The quality of responses received is directly proportional to the quality of the question asked. 🚮

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### Complete thread:

- Probability to pass multiple studiesHelmut 2021-02-19 12:02 [Power / Sample Size]
- Probability to pass multiple studies ElMaestro 2021-02-19 12:57
- Power limbo Helmut 2021-02-19 13:37

- Probability to pass multiple studies ElMaestro 2021-02-19 12:57