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प्रश्न
For a certain frequency distribution, the values of Assumed mean (A) = 1300, `sumf_id_i` = 900 and `sumfi` = 100. Find the value of mean (`barx`) .
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उत्तर
We have
(A) = 1300, `sumf_id_i` = 900 and `sumfi` = 100=N.
`barx=A+1/Nsum_(i=1)^nf_id_i`
`barx=1300+1/100 xx900`
`barx=1300+9`
`barx=1309`
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