Consider a wage equation for U.S. working married women: log(wage;) = Bo + Beduc; + Bexper...
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Consider a wage equation for U.S. working married women: log(wage;) = Bo + B₁educ; + B₂exper₁ + B3exper;2+ u₁ where exper and exper2 denotes years (and years squared) of work experience, while educ stands for years of education. We have good reasons to believe that exper and exper² are exogenous variables. On the other hand, the error term u is thought to be correlated with educ because of omitted ability, as well as other factors, such as quality of education and family background. (a) Suppose that we can collect data on husband, mother, and father education - huseduc motheduc and fatheduc - and that we want to use these three variables as instruments for the endogenous variable educ. Write down the first stage equation that you should run in this case. (b) Using data on 428 working married women in the US, you want to test whether the 3 instruments you have been considering are relevant. For that, you have just obtained the Stata output of the following two regressions. Perform an F test (it's ok to assume errors are homoscedastic!) to look into this question. Based on the results of you test, would you conclude that the instruments are relevant or not? Consider a wage equation for U.S. working married women: log(wage;) = Bo + B₁educ; + B₂exper₁ + B3exper;2+ u₁ where exper and exper2 denotes years (and years squared) of work experience, while educ stands for years of education. We have good reasons to believe that exper and exper² are exogenous variables. On the other hand, the error term u is thought to be correlated with educ because of omitted ability, as well as other factors, such as quality of education and family background. (a) Suppose that we can collect data on husband, mother, and father education - huseduc motheduc and fatheduc - and that we want to use these three variables as instruments for the endogenous variable educ. Write down the first stage equation that you should run in this case. (b) Using data on 428 working married women in the US, you want to test whether the 3 instruments you have been considering are relevant. For that, you have just obtained the Stata output of the following two regressions. Perform an F test (it's ok to assume errors are homoscedastic!) to look into this question. Based on the results of you test, would you conclude that the instruments are relevant or not?
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a The first stage equation that should be run in this case is educ o B1huseduc B2motheduc B3fatheduc ... View the full answer
Related Book For
Organizational Behavior and Management
ISBN: 978-0078029462
10th edition
Authors: Robert Konopaske, John M. Ivancevich, Michael T. Matteson
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