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Find the mean deviation about the mean for the data
4, 7, 8, 9, 10, 12, 13, 17
Asked by Seemi Last Modified
Answer 
Nurullmobeen
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
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