The correlation equals +1 for which of the following four pairs of numbers?
A)(−2, −4), (0, 0), (2, 4), (4, 8)
B)(0, 0), (1, 1), (2, 4), (3, 9)
C)(−2, −9), (0, −5), (2, -1), (4, 3)
D)(−2, −2), (0, −5), (2, −1), (4, −9)

Question

Quizplus · Accepted Answer

A correlation of +1 indicates a perfect positive linear relationship between two variables. In option A, as one variable increases, the other variable increases in a perfectly linear manner, doubling in this case.

The Correlation Equals +1 for Which of the Following Four