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.

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

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.

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

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!

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

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to …

The idea of spread and standard deviation Calculating standard deviation step by step Standard deviation of a population Mean and standard deviation versus median and IQR Concept check: …