Step i Assume that the frequency in each class is centered at the mid-point. Divide the results x into intervals and then count the number of results in each interval. Let us count how many of each number there is.
Step 4 - Click on Calculate for meanmode and median Calculator for grouped data.
The mean is calculated for these mid-points. Step 1 - Select type of frequency distribution Discrete or continuous Step 2 - Enter the Range or classes X seperated by comma Step 3 - Enter the Frequencies f seperated by comma. Solution for Calculate the sample mean and sample variance for the following frequency distribution of heart rates for a sample of American adults. To find the mean add all the ages together and divide by the total number of children.