Which of the following statements is/are true about the variance?
A)It is the square of the standard deviation.
B)It is the average of the squared deviations from the mean.
C)It takes all of a variable's values into account.
D)All of these.

Question

Quizplus · Accepted Answer

Option A is true as the variance is calculated by squaring the standard deviation.
Option B is also true as the variance measures the average distance of each observation from the mean, and it does so by taking the square of these deviations.
Option C is also true as the variance considers all values in a dataset to determine the average deviation from the mean. 
Hence, all the statements are correct, making option D the correct answer.

Which of the Following Statements Is/are True About the Variance