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.

The arithmetic mean is just the regular old mean, or average. To get it, you sum up all the values and divide by n. The reason why it is sometimes called the arithmetic mean is that there are …

The mean absolute deviation (MAD) is the mean (average) distance between each data value and the mean of the data set. It can be used to quantify the spread in the data set and also be …

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.

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

Explore how we can think of the mean as the balancing point of a data distribution. You know how to find the mean by adding up and dividing. In this article, we'll think about the mean as the …

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!

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.