Khan Academy
Khan Academy: Calculating the Median: Data Displays
Practice computing the median of data sets presented in a variety of formats, such as frequency tables and dot plots. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Creating Frequency Tables
In this exercise, students practice creating frequency tables. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Creating Frequency Tables
Practice creating frequency tables from small data sets. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Purple Math
Purplemath: Scatterplots and Regressions
Explains the purpose of scatterplots, and demonstrates how to draw them.