To construct estimates of the population variance, we divide each sum of squares by its respective________.
A) degrees of freedom.
B) N.
C) category mean.
D) standard deviation.

Question

Quizplus · Accepted Answer

To construct estimates of the population variance, we use the formula for the sample variance, which divides the sum of squares by the degrees of freedom (N-1). This correction factor is needed because using N instead of N-1 can lead to a biased estimate of the population variance. Therefore, we select choice letter A as the correct answer.

To Construct Estimates of the Population Variance, We Divide Each