identify an advantage of using rank correlation instead of linear correlation

Choose one of the following three questions and post your answer:

1.  In your own words, what is a nonparametric test?  What is a parametric test (Section 13-2)?
2.  In your own words, identify an advantage of using rank correlation instead of linear correlation (Section 13-6).
3.  In your own words, what is the difference between a nonparametric test and a distribution-free test (Section 13-7)?

Please respond to my discussion question by clicking on the Reply button after this section.  When you reply to another student’s comments, click on Reply after their comments.

EXAMPLE:
Hello!  I will take number 1.  A nonparametric test does not require that the samples are coming from a normal distribution, while a parametric test does.

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