This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of histograms.

Students learn how to create stem-and-leaf diagrams and boxplots by collecting data on the surface tension of water molecules. This hands-on activity using pennies is a great way to learn how to organize data.

A comprehensive guide for exploring the topic of outliers with definitions, what is an outlier, how to find outliers using the turkey method and the interquartile range, solved examples, and interactive questions.