I have a data set comprising of responses from approximately 385 people on several variables such as their shopping habits, mode of transport to the shopping centre etc. I want to do Pearson correlation on the variables (by age, gender, income level etc. of the respondents).
Is there any rule that says what would be the maximum number of tests that can be reliably performed on this data set? I am unsure if "reliable" is the correct term; I mean "valid" or "sound" in this case.
My alpha is 0.05 and I have corrected it using Sidak's method, so the experiment wise error is 0.05 for the 80 tests that I want to perform on this data set.