A perfect correlation, whether positive or negative, is __________ in the real world.
A) expected
B) imperfect
C) common
D) rare

Question

Quizplus · Accepted Answer

A perfect correlation, whether positive or negative, is rare in the real world because it is very rare for two variables to have an exact linear relationship where every change in one variable is accompanied by an exact corresponding change in the other variable. In most cases, there is some degree of variation or noise in the data.

A Perfect Correlation, Whether Positive or Negative, Is __________ in the Real