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RegisterProbability to pass multiple studies [Power / Sample Size]
posted by Helmut 
– Vienna, Austria, 2021-02-19 12:02 (75 d 13:44 ago) – Posting: # 22214
Views: 983
Dear all (and esp. our expert in probability zizou),
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 = 0.906 ~ 0.53?
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 = 0.906 ~ 0.53?
Or does each study stand on its own and we don’t have to care?
—
Dif-tor heh smusma 🖖
Helmut Schütz
![[image]](https://static.bebac.at/img/CC by.png)
The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes
Dif-tor heh smusma 🖖
Helmut Schütz
The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes
Complete thread:
- Probability to pass multiple studiesHelmut 2021-02-19 12:02
![[Mix]](https://static.bebac.at/img/mix.png "open in Mix view")
- 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
Ing. Helmut Schütz