Question

True or False,

The standard deviation is the most commonly used measure of variability.

The measures of variability given by the teacher were range, standard deviation, and variance. I think the answer may be false with the correct answer being range due to how easy it is to calculate it, but I'm not sure.

Answer 1

The standard deviation is the most commonly used measure for variability.

Reason: This measure related to the distance between the observations and the mean.

So answer must be standard deviation.

Range can't be the answer because it fluctuates with the extreme values.