The denominator in the calculation of the sample covariance,cov (x,y),is:
A)n − 2
B)n − 1
C)n
D)2n − 1

Question

Quizplus · Accepted Answer

The denominator in the calculation of the sample covariance is n-1. This is because using n-1 in the denominator helps to correct for the fact that the sample mean is being used instead of the population mean, and this correction results in an unbiased estimation of the population covariance.

The Denominator in the Calculation of the Sample Covariance,cov (X,y),is