Calculating the mean Calculating the median Choosing the "best" measure of center Mean, median, and mode review

Learn how to calculate the mean by walking through some basic examples & trying practice problems.

Mean, median, and mode are different measures of center in a numerical data set. They each try to summarize a dataset with a single number to represent a "typical" data point from the dataset.

Practice calculating the mean (average) of a data set. The mean gives us a sense of the middle, or center, of the data.

This Khan Academy article reviews mean, median, and mode concepts with examples to help understand their application in statistics and probability.

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Practice finding the median of a data set. Like the mean, the median gives us a sense of the middle, or center, of the data.

Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us!

Explore how we can think of the mean as the balancing point of a data distribution.

Calculate the mean, median, or mode of a data set!