Skip to main content

All Questions

1 vote
0 answers
44 views

Which Non-Parametric Test should I use?

I want to make sure I am choosing the right statistical test. I am working with 7 semesters of exams scores for a particular course. Each semester the course ran with many sections. However, the ...
Tonya's user avatar
  • 11
1 vote
2 answers
404 views

Appropriate statistical test for data which do not have normally distribution and do not have equal variance

My data has 150 samples and is not normally distributed, and it does not have equal variances either. I know t-test (e.g. this python method) can be used when data is normally distributed and it can ...
Memin's user avatar
  • 271
5 votes
2 answers
1k views

Comparing P value from t test vs. Mann-Whitney test

If you analyze the same data with a t test and the nonparametric Mann-Whitney test, which do you expect to have the lower P value?
Harvey Motulsky's user avatar