Average Absolute Deviation
Average Absolute Deviation is summation of the absolute value of each deviation. It is useful to measure the spread of data while considering the effect of total number of data
Other name: average absolute error
Formula:
Example:
You can try the interactive program of Mean Absolute Deviation (MAD) below. Simply click "Compute Mean Absolute Deviation" button.
To fill with your own input data, type your input data in the box below, separated by comma. Only numbers input are accepted. Then click Compute Mean Absolute Deviation button
Special for only
two
positive numbers
and
, we have
Average Absolute deviation
Variance
If
, then variance and average absolute deviation which go to zero:
,
If
, then
If
, then
If
, then
Example
,
, then
See also: Variance , Mean and Average Tutorial , Learning from Data
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Preferable reference for this tutorial is
Teknomo, Kardi (2015) Mean and Average. https:\\people.revoledu.com\kardi\ tutorial\BasicMath\Average\