The sample standard deviations for x and y are 10 and 15,respectively.The covariance between x and y is -300.The correlation coefficient between x and y is:
A)-2
B)-0.5
C)0.5
D)2

Question

Quizplus · Accepted Answer

The correlation coefficient is calculated as the covariance divided by the product of the standard deviations. In this case, the correlation coefficient is -300 / (10 * 15) = -2.

The Sample Standard Deviations for X and Y Are 10