Author Question: The population variance is a. an estimate of the sample variance. b. usually an unknown that we ... (Read 143 times)

Kthamas · **on:** Jun 20, 2018

The population variance is

a. an estimate of the sample variance.
b. usually an unknown that we try to estimate.
c. calculated exactly like the sample variance.
d. a biased estimate.

Question 2

We normally compute the variance using N 1 in the denominator because

a. it is easier that way.
b. it leads to an unbiased estimate of the sample variance.
c. it leads to an unbiased estimate of the population variance.
d. it overestimates that population variance.