Hi all,

I found this sample size calculator - http://www.raosoft.com/samplesize.html?nosurvey. Understood that this is useful to carry out an experiment on a smaller sample size to replicate results and take them for granted for whatever large sample size one has.

But can the same calculator be considered in deriving insight (for data analysis)? For example, among A,B,C,D,E,F… to know which one is better by considering the data of about say 20000, can this be used to calculate the minimum number of data points that A,B,C,… should have to conclude something meaningful like A is better than B or similar cases.