Q. 74.0( 6 Votes )

Find the mean dev

Answer :

Here the number of observations is 12 which is odd.


Arranging the data into ascending order, we have 34, 42, 45, 48, 50, 54, 56, 63, 65, 67, 70, 78


Now,


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


21, 13, 10, 7, 5, 1, 1, 8, 10, 12, 15, 23


Thus, the required mean deviation about the median is




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