Learn about mean, median, and mode with Khan Academy's comprehensive review of these fundamental concepts in statistics.

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

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!

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.

Practice calculating and interpreting the mean and standard deviation of a discrete random variable.

Mean and median both try to measure the "central tendency" in a data set. The goal of each is to get an idea of a "typical" value in the data set. The mean is commonly used, but sometimes the median is …

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.

Key idea: We can think of the mean as the balancing point , which is a fancy way of saying that the total distance from the mean to the data points below the mean is equal to the total distance from the …