For anyone in the know, I would like some quick guidance on what test(s) of significance to run on some data.
As a quick run-down, imagine a retrospective study evaluating the efficacy of treatment across 16 subjects. Baseline and follow-up measurements (thickness in microns) were taken. A priori assumption would be that the treatment doesn't do anything (i.e. thickness would be the same or would increase with time).
TIA