Explanation:
Step 1: find the mean of the data
Step 2: subtract the mean from every data value
Step 3: find the absolute values of the differences from Step 2
Step 4: find the mean of the absolute values from Step 3. This is the MAD.
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The mean and absolute value have their usual definitions.
The mean is the sum of a set of numbers, divided by the number of numbers in the set.
The absolute value is the numerical value of a number with its sign changed to positive, if it isn't already. For example, |-1| = 1 and |1| = 1. The vertical bars signify the absolute value of their contents.
