Introductory Econometrics 4th Edition by Jeffrey Wooldridge

تمرين 3

Refer to Table in Chapter 13. There, we used the data in FERTIL1.RAW to estimate a linear model for kids, the number of children ever born to a woman.
(i) Estimate a Poisson regression model for kids, using the same variables in Table 13.1. Interpret the coefficient on y82.
(ii) What is the estimated percentage difference in fertility between a black woman and a nonblack woman, holding other factors fixed
(iii) Obtain u. Is there evidence of over- or underdispersion
(iv) Compute the fitted values from the Poisson regression and obtain the R-squared as the squared correlation between kidsi and Compare this with the R-squared for the linear regression model.
Determinants of Women's Fertility