Answer: This is because they are less powerful than parametric procedures.
Explanation:
Non-parametric procedures are not as powerful as parametric procedures. Non-parametric procedures do not depend on assumptions about the shape or form of the probability distribution from which the data is extracted. A parametric test has more statistical power than non-parametric test. Some conditions of validity are required for the result of a parametric test to be reliable
Maybe you have allergies since the weather is getting warmer or the flu
His skin was the line of defense that was broken. Hope this helps.
