An Applet for the Investigation of Simpson's Paradox

This article describes an applet that facilitates investigation of Simpson's Paradox in the context of a number of real and hypothetical data sets. The applet builds on the Baker-Kramer graphical representation for Simpson's Paradox. The implementation and use of the applet are explained. This is followed by a description of how the applet has been used in an introductory statistics class and a discussion of student responses to the applet.

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