Question

mad (mean absolute deviation)
a measure of center calculated by finding the average of all the data values
a measure of variability calculated by averaging the distances of data values from the mean
a measure of center that is found in the middle of an ordered data set
a measure of variability calculated by subtracting q3 - q1

Explanation:

Step1: Recall definition of MAD

Mean Absolute Deviation (MAD) is a measure of variability. It is calculated by averaging the distances of data - values from the mean.

Answer:

A measure of variability calculated by averaging the distances of data values from the mean.