2:04

2:20

3:35

3:39

1:31

The average absolute deviation of a data set is the average of the absolute deviations from a central point. It is a summary statistic of statistical dispersion or variability. In this general form, the central point can be the mean, median, mode, or the result of another measure of central tendency. Furthermore, as described in the article about averages, the deviation averaging operation may refer to the mean or the median. Thus the total number of combinations amounts to at least four types of average absolute deviation.

### Measures of dispersion

### Mean absolute deviation around a central point

### Median absolute deviation around a central point

### Minimization