Dummy variables and Interaction effects worksheet and problem set - part one As you go through the computer output, keep track of the various models.

Using Models 1 and 2 , write out the regression equations for men and for women. Then write out the regression equations for men and women implicit in Model 3. How do these compare for women?

Using Model 4, write out the regression equations for men and for women. What is the estimated effect of age among women? Among men? Calculate the estimated physical functioning score for a 45 year old woman and for a 45 year old man.

Using a partial \(F\) test, determine whether the marital status dummy variables add significantly to model 5 . Do they add significantly to model 6 ?

What is the effect of 'not currently married' in model 6 ? In model 7? Be precise in stating what the coefficient means (i.e. relative to what other group(s)?).

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