1.Previous
3.Next

averaging these absolute differences. The formula is expressed as follows:where

* D_i is the absolute deviation,
* x_i is the data element,
* m(X) is the chosen measure of central tendency of the data set--sometimes the mean (), but most often the median.

The average absolute deviation (AAD) in statistics is a measure of the dispersion or spread of a set of data points around a central value, usually

1.Previous
3.Next