View isaac aktam, hbsc's profile on linkedin, the world's largest professional community isaac has 4 jobs listed on their profile see the complete profile on linkedin and discover isaac's. 102b problemset 5 solutions - download as pdf file (pdf), text file (txt) or read online standford problem set. Some families have more kids than others so that then excel or statplus can do the regression, because they're both expecting.
Here we can see that having the first two same sex children has an effect of increasing likelihood of having 3 or more children by 67% regression is. Part c women working more than average hours are less likely to have additional childrenpart b command: reg weeksm1 morekids387 weeks less per year than women with two or fewer children women with over two children work 5. (c) the linear regression of morekids on samesex (a linear probability model) yields morekids = 0 the estimated value of βm orekids is -6 which indicates that women with more than 2 children work 5 so that the ols estimator of βm orekids is positively biased. 102b - introduction to econometrics - winter term 2012/13 paolo pin [email protected] stanford, february 21st 2013 problem set 5 this problem set is based on lectures 12 and 13 (february 19th and 21st.
Handout seminar 8, econ4150 herman kruse april 10, 2014 reg weeksm1 morekids, robust linear regression number of obs = 254654 f( 1,254652) = 382091. The variable weeksm1 represents the weeks worked (work supply), morekidsis a dummy variable taking the value one if the woman has more than two kids (a) run the regression of the variable weeksm1 on the indicator variable morekidsby. 4 explain why samesex is a valid instrument for the instrumental variable regression of weeksm1 on morekids 5runthereducedformregression 6 estimatetheregressionof weeksm1 onmorekids,usingsamesex asaninstrument.
Specifically, if a woman has had more than two children, she is expected to have worked approximately 54 fewer weeks than women who have had two or fewer children part b: explain why the regression above is inappropriate for estimating the causal effect of fertility (morekids) on labor supply (weeksworked. Yes, the couples whose first two children are of the same sex are more likely to have a third child th e effect is large and statistically significant because the p value is much smaller than the a 1 (01% or 05%), the null hypothesis should be rejected. Outcomes -weeks worked -income -hours worked per week covariate of interest -morekids - mom has more than 2 kids -2sls ignores the dichotomous nature of the variable.
Ivregress 2sls weeksm1 agem1 black hispan othrace (morekids = samesex), robust instrumental variables (2sls) regression number of obs = 254654 wald chi2(5) = 695498. 2 9 prob f 2 7 5 4 regress weeksm1 morekids w1 w2 w3 w4 robust linear from economia eae250a at pontificia universidad católica de chile. Explain why samesex is a valid instrument for the instrumental variable regression of weeksm1 on morekids suggested solution to problem set 3 created date.
Table 1: series in data set variable description morekids =1 if mom had more than 2 children boy1st =1 if first child was a boy boy2nd =1 if second child was a boy samesex =1 if first two children same sex agem1 age of mom at census black =1 if mom is black hispan =1 if mom is hispanic othrace =1 if mom is not black, hispanic or white weeksm1. Empirical application i of iv estimation 1 first, we use airfare data to estimate the demand function of air service to run the ﬁrst-stage regression, and. Yes, women with more than two children work less than women with two children the coefficient is -5386996 dependent variable: weeksm1 method: least squares date: 05/1 1 /1 2 time: 10. On average, do women with more than two children work less than women with two children how much lessb explain why the ols regression estimated in (a) is inappropriate for estimating the causal effect of fertility (morekids) on labor supply (weeksworked)c.
The case of one explanatory variable is called simple linear regression for more than one explanatory variable, it is called multiple linear regression. Assignment - econometrics (instrumental variable stock watson) 2015 than women with two or fewer children part c women working more than average hours are less. Morekids byte %90g =1 if mom had more than 2 kids weeksm1 byte %90g moms weeks worked in 1979 regression number of obs = 254654 wald chi2(1) = 2233.