Which of the following is true of variance?
A) The formula to calculate variance of a population is not the same as the formula to calculate variance of a sample.
B) Its value is inversely proportional to the degree to which the data is spread from the mean.
C) It only requires the middle 50% of data to be calculated.
D) It is the square root of standard deviation.

Question

Quizplus · Accepted Answer

The formula for calculating the variance of a population differs from that of a sample, primarily in the denominator where N (the total number of observations) is used for a population and N-1 (to account for sample bias) is used for a sample.

Which of the Following Is True of Variance