The standard deviation is the most common measure of variation and is represented by the symbol S.

Question

Quizplus · Accepted Answer

The standard deviation is a measure of how spread out a set of data is. It is calculated by taking the square root of the variance. The variance is the average of the squared differences between each data point and the mean. The standard deviation is a more useful measure of variation than the variance because it is expressed in the same units as the data.

The Standard Deviation Is the Most Common Measure of Variation