Q. 5 5.0( 5 Votes )

The daily income of a sample of 50 employees are tabulated as follows.

Find the mean daily income of employees.

Answer :

No need to convert discontinuous classes into continuous for class mark because class mark of C.I are same and gives same result

Assumed mean, a = 300.5

and di = (xi - a)

= 300.5 + 2800/50

= 356.5

Hence, the average daily income of employees is Rs.356.5

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