Answer by EdM for What is the correct way to test multiple dummies?
In general, if you want to see if a predictor contributes to a model you need to examine all of the ways that it is involved in the model. That's a fundamental general response to your question. How...
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I'm discussing a topic with classmates and the textbook does not address our concerns. In the following model:$$wage = \beta_0 + \beta_1 female + \beta_2 educ + \beta_3 (female \times educ) + u$$it...
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