The median of the following data is 525. Find the values of x and y, if the total frequency is 100.

The mean of following data is 21.6. find the value of p

Find the median for the following data:

The arithmatic mean of the following data is 14, find the value of P.

The mean of the following distribution is 50 Find the value of a and hence the frequencies of 30 and 70.