Find the mean deviation about the mean for the data in Exercises.

Question

Philoid · Accepted Answer

We make the following table and add other columns after calculations.

So, we can calculate the absolute values of the deviations from the mean, i.e., |x_i – x̅|, as shown in the table.

Therefore, we have

And

Hence, the mean deviation about the mean for the given data is 157.92.