Question

The ________ is the most common and most important measure of variability in the field of statistics.

Answer 1

The standard deviation is the most common and most important measure of variability in the field of statistics. Standard deviation is a measure of how a set of data spreads out from its mean. It is calculated as the square root of variance by determining the difference between each data point relative to the mean.

Answer 2

Variance would be the most vital measure of variability in the statistics field. It is then the measure of how far the data set is being spread out. It would be the average of the differences from the mean thus would give an idea of how data is being spread.