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Activity
Other

Northern Michigan University: Line Plots

For Students 9th - 10th Standards
The author utilizes a line plot to demonstrate what an "outlier" is, what "clusters" are, and what "gaps" are.
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Website
Soft Schools

Soft Schools: Outliers

For Students 6th - 8th Standards
On this websites students explore the concept of outliers. Students are given several data sets and investigate how outliers can effect the mean and median of a data set.
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Activity
McGill University

Removing Outliers

For Students 9th - 10th Standards
This site discusses the topic of removing outliers and how the configurations are done.
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Activity
Education Place

Houghton Mifflin: Eduplace: Math Steps: What Is It? Data

For Students 6th - 8th Standards
This is a great place for lesson information on the concept of analyzing data - measures of central tendency. Three other tabs are available besides the "What Is It?" link. Tips and Tricks, When Students Ask, and Lesson Ideas also...