Question

If the arithmetic mean is 52 then find out the missing frequency :-

Table

Salary : 10 - 20, 20 - 30, 30 - 40, 40 - 50, 50 - 60, 60 - 70, 70 - 80

Employees : 5, 3, 4, ?, 2, 6, 13

Answer 1

Hey friend!

Kindly refer to the attachment.

Hope this helps.

ße ßraïnly!