Which of the following statements about rank correlation is NOT true?
A) Rank correlation is sometimes used to approximate product moment correlation
B) If one variable is non-numeric the rank correlation is most appropriate
C) Rank correlation can be used if variables can be placed in order (e.g. of size)
D) Rank correlation is usually considered to be more accurate than product moment correlation

Question

Quizplus · Accepted Answer

Rank correlation is not usually considered to be more accurate than product moment correlation; it is used in situations where the assumptions for product moment correlation are not met, such as with ordinal data or non-linear relationships.

Which of the Following Statements About Rank Correlation Is NOT