Testing of two methods at some time peroiod say post induction.. Two methods are TD and FT.we already know TD method is better than FT.. my question is How we Check whether FT method is significant with TD method or not at that time.. population is not normal and even both have not equal mean and variance.sample size is 30 or more... I know we go for non parametric test... but which test is better.rply this question as soon as possible... can we also check TD and FT method are independent with ech other or not... then we go for further analysis...