Find the mean deviation about the mean for the data
4, 7, 8, 9, 10, 12, 13, 17
The given data is
4, 7, 8, 9, 10, 12, 13, 17
Mean of
the data,
The
deviations of the respective observations from the mean
are
–6, – 3, –2, –1, 0, 2, 3, 7
The
absolute values of the deviations, i.e.
,
are
6, 3, 2, 1, 0, 2, 3, 7
The required mean deviation about the mean is
