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If the mean of the following frequency d...

If the mean of the following frequency distribution is 5, then b =
{:(x_(i) " :",3,5,7,4),(f_(i)" :",2,a,5,b):}

A

10

B

6

C

8

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
`B`
(i) `(sum fx)/(N) = 5`.
(ii) Find the value of `sum fx "and" sum f`.
(iii) Mean `= (sum fx)/(sum f)`.
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