Purple Math
Purplemath: Mean, Median, Mode, and Range
Mean, median, and mode are three kinds of "averages". The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To...
Missouri State University
Missouri State University: Introductory Statistics: Statistics
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...
Calculator Soup
Calculator Soup: Statistics Calculator
Calculate basic summary statistics for a sample or population data set including minimum, maximum, range, sum, count, mean, median, mode, standard deviation and variance.
Shodor Education Foundation
Shodor Interactivate: Lesson: Box Plots
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.
University of Texas
Inside Mathematics: Baseball Players [Pdf]
This task challenges students to demonstrate understanding of the concept of measure of center.
Shodor Education Foundation
Shodor Interactivate: Lesson: Stem and Leaf Plots
Lesson plan introduces students to stem-and-leaf plots. Many resources are available for student and teachers here.
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