You are now at the Chapter 9 section of the book's student Web site.
Here you can
Review and improve your understanding of the material | Quiz yourself | Apply this information | Get help |
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See how the key terms are connected by looking at this concept map. |
Test yourself on the key terms with this
matching test
Play this drag and drop matching game to see if you know your threats to internal validity. |
If you have a fantasy baseball or football team, see
how knowing about regression toward the mean can help you win.
Before investing, you should consider regression toward the mean.
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Help with answering the end-of-chapter exercises. |
Go through an
online tutorial on internal validity
Go through our tutorial looking at the weaknesses of four designs. |
Take some practice quizzes |
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Review by
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