Learn how to calculate the mean of ungrouped and grouped data, and compare it with other measures of central tendency such as median and mode. See solved problems and practice questions on mean . Mean formulas for populations and samples In research, you often collect data from samples and perform inferential statistics to understand the population they came from. The formulas to find the mean for ungrouped data and grouped data are different. In this section, you will learn the method of finding the mean for both of these instances. Read More about Mean, Median and Mode of Grouped Data. Median A Median is a middle value for sorted data. The sorting of the data can be done either in ascending order or descending order. A median divides the data into two halves. The formula to calculate the median of the number of terms if the number of terms is even is shown in the image below: Median Formula for Even Terms The formula to calculate the median of the number of terms if the number of terms is odd is shown in the image ...
