Mean Absolute Deviation (MAD)

The mean absolute deviation is the mean of the absolute value of the differences between the supplied values and the arithmetic mean of all values.

The formula used in finding the mean is:

MAD =

Snt=1 |Xt- µ|
__________
n

The variables used in mean absolute deviation are defined as follows:

X = the supplied values

n = the number of values

µ = the arithmetic mean of all the values

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