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

Question

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

Quizplus · Accepted Answer

A perfect correlation means that there is a perfectly linear relationship between two variables, which rarely happens in the real world. There are usually other factors that influence the relationship between variables, making it imperfect. Therefore, a perfect correlation is rare.

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