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Measures of central tendency

3 videos
3 skills
At the base of our understanding of statistics is the concept of data distribution and the measures of central tendency, often referred to as the average of a distribution of values. For instance, have you ever asked your teacher what the average score was on a test? If you have, you wanted to know the value of central tendency. Similar measures are the median and the mode. We'll explain it all for you!

Statistics intro: Mean, median and mode

VIDEO 8:54 minutes
This is a fantastic intro to the basics of statistics. Our focus here is to help you understand the core concepts of arithmetic mean, median, and mode.

Finding mean, median and mode

VIDEO 3:55 minutes
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!

Mean, median, and mode

PRACTICE PROBLEMS

Exploring the mean and median

VIDEO 5:26 minutes
Watch as we use a nifty interactive module to demonstrate how moving points along a number line can help us find the mean and median.

Exploring mean and median

PRACTICE PROBLEMS
Sometimes the best way to get a sense of numbers is to play around with them. In this exercise, you'll play with the shape of the data and observe the impact on the mean and median.

Average word problems

PRACTICE PROBLEMS