Q. 215.0( 1 Vote )

If the mean of the following distribution is 27, find the value of p.

Answer :


We have got


Σfi = 43 + p and Σfixi = 1245 + 15p


mean is given by



( given: mean of pocket allowance is 27)


1161 + 27p = 1245 + 15p


27p – 15p = 1245 – 1161


12p = 84


p = 84/12


p = 7


Thus, p = 7


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