The easiest method of organizing data is a frequency distribution, which converts raw data into a meaningful pattern for statistical analysis. Learn how in this tutorial with examples.

Dot plots and frequency tables are tools for displaying data in a more organized fashion. In this article, we review how to make dot plots and frequency tables.

With two pieces of data, learn how to organize the data into a two-way frequency table.

Practice comparing distributions that are presented in dot plots, histograms, and box plots. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

This resoruce explains how to read a cumulative frequency distribution graph.

This learning module looks at droughts. It examines their characteristics and distribution, how they are measured, their causes, how they can be predicted, and their frequency in Africa. Includes handouts, maps, activities, and videos.

Site contains information on the statistical term standard deviation. It gives a definition and shows how to calculate it. It has a link to information on the absolute value of a deviation and how the topics are related.