Question

Non parametric test may not be useful in performing ?

Answer 1

no.....................

Answer 2

It may be useful or not depending on situation. Non-parametric methods may be useful in performing those experiments where there is small amount of information available. Actually non-parametric methods can be used to study data that is ranked in an order but has no or little clear numerical interpretation. Due to small amount of assumption involved, non parametric tests have wide range of applications.