Data distributions

Data makes more sense when we graph it and summarize it with numbers.
14 exercises available

A picture says a thousand words. A well-made data display can show data in a way that everyone understands. In this tutorial we'll learn how to construct and describe some common displays of data.

Individual results will vary. Measuring spread in distributions helps us to describe how much variability there is in a set of data. In this tutorial we'll use range, interquartile range, and standard deviation to talk about the spread in a data set.

Whether we're looking at scientific data or stock price charts, box-and-whisker plots can show up in life. This tutorial covers what they are, how to read them and how to construct them.

Do people live longer in different parts of the world? In this tutorial we’ll compare the center and spread of distributions to see what conclusions we can make.