Which of the following is a true statement about non-parametric tests? mcq given below:
Q. Which of the following is a true statement about non-parametric tests?
(a) They are used to analyse data that are normally distributed (b) Paired t-test is a nonparametric test (c) They are used to analyse data that are not normally distributed (d) They can be used only when the data is collected from a random sample of subjects