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例:Which of the following statements about parametric and nonparametric tests is least accurate?

A. Parametric tests are most appropriate when a population is heavily right skewed.

B. Nonparametric tests have fewer assumptions than parametric tests.

C. Nonparametric tests are often used in conjunction with parametric tests.

答案:A

解析:For a distribution that is non-normally distributed, a nonparametric test may be most appropriate. A nonparametric test tends to make minimal assumptions about the population, while parametric tests rely on assumptions regarding the distribution of the population. Both kinds of tests are often used in conjunction with one another.

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