Which of the following statements about nonparametric methods is correct?
A)Nonparametric methods are only used in cases where parametric tests such as t or F do not exist.
B)Nonparametric tests should always be used when one is available because they are easier to apply then their parametric counterparts.
C)Nonparametric tests are useful alternatives to parametric tests such as t or F when certain assumptions required by parametric tests are violated.
D)Nonparametric tests are only used if the data comes from independent samples.

Question

Quizplus · Accepted Answer

Nonparametric tests are specifically designed to be used when the assumptions required by parametric tests are violated, such as when the data is not normally distributed or when the variances are not equal across groups. Nonparametric tests can be used with both independent and dependent samples. However, it is not always necessary to use nonparametric tests when parametric tests are not appropriate, as there may be other alternative tests available. Therefore, option A is incorrect. Similarly, nonparametric tests are not always easier to apply than parametric tests, as this depends on the specific test and the nature of the data. Therefore, option B is also incorrect.

Which of the Following Statements About Nonparametric Methods Is Correct