Non-parametric being distribution free, what should be the guideline for sample size determination. I appreciate your suggestion and reference if any. Thank you
Thare is nothing like nonparametric research design. Sample size depends on what outcome you look far and where you are looking for estimating a parameter or testing difference with an effect size. Quality of outcome measures. Me and said or proportions.
There is no design like non parametric research design. In resesrch if parametric condition are not satisfied we can use non parametric tests for analysis