Step 4 - Click on Calculate for meanmode and median Calculator for grouped data. To calculate the mean of grouped data the first step is to determine the midpoint also called a class mark of each interval or class. Leave the bottom rows that do not have any intervals blank.
N 1228 so the median is the 28th data Value.
B is the cumulative frequency of the groups before the median group. Learn How to Calculate the Median from a Frequency Table in Excel Calculating the median from a frequency table is not as straightforward as many would want to think. To estimate the Median use. Estimated Median L n2 BG w.