The mean of the following distribution is 18. Find the frequency f of the class `19-21`.

The mean of the following distribution is 18. Find the frequency fof the class 19-21

The mean of the following distribution is 18. The frequency f in the class interval 19-21 is missing {:("Class ",11-13,13-15,15-17,17-19,19-21,21-23,23-25),("Frequency "," "3," "6," "9," "13," "f," "5," "4):} Determine f .

The mean of the following distribution is 54. Find the missing frequency.

The mean of the following distribution is 18. What is the value of f?

The mean of the following distribution is 52 and the frequency of class interval 30-40 is f. Find f.

If the mean of the following distribution is 7.5, find the missing frequency f

The mean of the following frequency distribution is 50. Find the value of f:

The mean of the following distribution is 50 but the frequency f_(1) and f_(2) in classes 20-40 and 60-80, resepectively are not known. Find these frequencies, if the sum of all the fequencies is 120

The mean of the following distribution is 50 but the frequency f_(1) and f_(2) in classes 20-40 and 60-80, resepectively are not known. Find these frequencies, if the sum of all the fequencies is 120

The mean of the following frequency distribution is 5,find the value of f.