So this might be kind of long. But to find the mean absolute deviation. First you find the mean so add and divide by the amount of numbers there are.
Find the sum of the data values, and divide the sum by the number of data values.
Find the absolute value by subtracting each number by the mean EX: data value – mean.
After you find those new numbers then just add them all together
Divide the sum of the absolute values of the differences by the number of data values.
Hope this helps.
