Q. 124.2( 5 Votes )

The table given below gives the distribution of villages and their heights from the sea level in a certain region.


Compute the mean height, using the step-deviation method.

Answer :

Let the assumed Mean be A = 1400


= h = x2 – x1 = 600 – 200 = 400


Thus, we prepare the table as below:



We know that,


Mean =


=


Hence, The Mean height is 984.51.


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