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
Develop a hypothesis, make observations, analyze data, draw conclusions
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There are about 78 calories in a small apple.