Q. 14.1( 12 Votes )

Find the mean dev

Answer :

We have, 7, 8, 4, 13, 9, 5, 16, 18


Mean of the given data is



The respective absolute values of the deviations from the mean , i.e. are


3, 2, 6, 3, 1, 5, 6, 8


Thus, the required mean deviation about the mean is




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