Tagged Questions

1
vote
0answers
64 views

Statistical test for two-factor heteregeneously distributed samples

Data I have a sample size of 50 in group A and 50 in group B where groups A and B are unmatched. Each sample in group A and group B has two frequencies associated with it, which I'll call $x$ and ...
3
votes
2answers
3k views

Is a log transformation a valid technique for t-testing non-normal data?

In reviewing a paper, the authors state, "Continuous outcome variables exhibiting a skewed distribution were transformed, using the natural logarithms, before t tests were conducted to satisfy the ...
1
vote
2answers
201 views

Is paired t-test valid for half-normal data?

ok i am not a statistician. I am doing paired comparison for several outcomes of cross validated interpolation results. I have to consider only the absolute value in my analysis and so although ...
8
votes
3answers
1k views

Express answers in terms of original units, in Box-Cox transformed data

For some measurements, the results of an analysis are appropriately presented on the transformed scale. In most of the cases, however, it's desirable to present the results on the original scale of ...