The assumption of normal distribution for the variable under consideration or some assumption for a parametric test is not valid or is doubtful then we use

Both Parametric Test and Non-Parametric Test

The assumption of normal distribution for the variable under considera

1.	The assumption of normal distribution for the variable under consideration or some assumption for a parametric test is not valid or is doubtful then we use
A.	Parametric Test
B.	Non-Parametric Test
C.	Both Parametric Test and Non-Parametric Test
D.	All of the above
Answer» C. Both Parametric Test and Non-Parametric Test