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Tool: Mean and Median
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Description: This flash allows the student to load and modify six existing datasets. The flash calculates the mean, median, and quartiles, and plots a histogram. Students are encouraged to examine the effects of deleting elements in the set, increasing every element in the set by the same number, etc., on the mean and median. Includes interactive quiz.
Technology Type: Flash 
Author: Ralph Irons (Surfin' Sinefeld)
Language: English 
Cost: Does not require payment for use

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Courses: Math 6 Histograms, freq. dist
Math 7 Histograms, freq. dist, Mean, median & mode
Probability & Statistics Displaying with Graphs, Describing with Numbers

Comment:I clicked buttons, but the tool did not support may building mathematical understanding.