This is an excellent resource on what the science of statistics involves. There are all kinds of definitions, examples, graphs, and charts to learn from. The topics covered include: mode, mean, median, skewed distributions and measures...

When presenting an argument, the use of statistics to support a point can be very effective. This handout offers advice on both how to read statistics so that you understand exactly what they mean, and how to use them in your argument so...

PlopIt allows users to build dot plots of data using the mouse. View how the mean, median, and mode change as entries are added to the plot.

Calculate basic summary statistics for a sample or population data set including minimum, maximum, range, sum, count, mean, median, mode, standard deviation and variance.

Provides lengthy explanations of the measures of central tendency - mean, mode, and median - and the measures of variability - range, variance, standard deviation. Graphs of interesting examples are presented as well, skewed...

This lesson plan introduces quartiles and box plots. It contains an activity and discussion. Supplemental activities about how students can represent data graphically are also included.

A tutorial to understand the three central tendencies and how to find them, as well as the standard deviation of values. Offers a discussion and practice problems.

Lesson plan introduces students to stem-and-leaf plots. Many resources are available for student and teachers here.