In addition to being measured by central tendency, group data can be measured by variability in descriptive statistics. How is variance calculated?
A)Square root the standard deviation
B)Square the standard deviation
C)Square the range, then divide by number of scores
D)Square the standard deviation, then divide by number of scores

Question

Quizplus · Accepted Answer

Variance is standard deviation squared, so standard deviation must first be calculated to find the variance of a data set.

In Addition to Being Measured by Central Tendency, Group Data