I'm doing a small research project with a sample size of 12. The data is slightly positively skewed but not strongly. The standards deviations are not that similar for the two sets of data. I've read that I cannot then do t-test if the standard dev's are different and the data is not of normal distribution.

I read about being able to transform the data so that it then matches the assumptions for doing a t-test. It said something about diving the data by the median in order to transform it?! I have no idea.

Does anyone have any ideas?

Alternatively I'll just have to discuss medians, interquartile ranges and such if I can't do parametric tests.

Thank you