Describe how and why you might conduct the class experiment with more than just two groups (an
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Question:
Describe how and why you might conduct the class experiment with more than just two groups (an experimental and a control group). What other groups might you add, and why? The groups should add levels of the independent variable, not another independent variable.
Also, indicate the statistical analysis required to test the significance of the difference between the means of several groups, and explain why we cannot simply use many t-tests to compare the differences between many pairs of groups.
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