The weights in kilograms of 60 workers in a factory are given in the following frequency table. Find the mean weight of a worker. Weight (in kg) x: 60 61 62 63 64 65 No. of workers f: 5 8 14 16 10 7

Explanation

let the assumed mean be `A=63`


we have,


`N=60,A=63` and `sum f_i u_i=-21`


Mean=`A+[1/N sum f_i u_i]`


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