Book Econometric Analysis of Cross Section and Panel Data By Wooldridge - Chapter 11 pot

... approach to estimation in Chapter 14. 11. 4 Hausman and Taylor-Type Models In the panel data methods we covered in Chapter 10, and so far in this chapter, coe‰cients on time-constant explanatory variables ... are obtained by multiplying expression (11. 55) by N and taking the square roots of the diagonal elements. As special cases, expression (11. 55) can be applied to...

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... cross section analysis the asymptotics is as the number of observations, denoted N throughout this book, tends to infinity. Usually what is meant by this statement is obvious. For panel data analysis, ... the time series dimension and let the cross section dimension grow. The research on asymptotic analysis with these kinds of panel data sets is still in its early...

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... 7.6 (Wage Equation with Panel Data) : Suppose we have data for the years 1990, 1991, and 1992 on a cross section of individuals, and we would like to estimate the e¤ect of computer usage on individual ... observations pooled across i and t. We men- tioned this estimator in the context of independent cross sections in Section 6.3. The estimator in equation (7.17) is fo...

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... Data censoring also arises in the ana lysis of duration models, a topic we treat in Chapter 20. A second kind of application of censored regression models appears more often in econometrics and, ... estimation of b and s 2 u means we can estimate the partial e¤ects of the elements of x t on Eðy t jx t ; c; y t > 0Þ and Eðy t jx t ; cÞ for given values of c, using equ...

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... outcome of a Tobit, rather than a probit, equation. The analysis of the models in this section comes from Wooldridge (1998). The model in Section 17.5.1 is a special case of the model studied by Vella ... problems for standard OLS analysis on the selected sample. A classic example of selection based on y i is Hausman and Wise’s (1977) study of the determinants of ear...

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... e¤ect of w on Eðy jw; cÞ, holding c fixed, is easily estimated. Unfortunately, complications often arise in the collection and analysis of economic data because of the nonexperimental nature of economics. ... function of x.Wheny and x are random, it makes sense to use the right-hand side of equation (2.8), but where f ðxÞ is the conditional mean, mðxÞ. Therefore, the (parti...

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... square root of the appropriate diagonal ele- ment of ^ VV N =N. The asymptotic standard errors can be loosely thought of as estimating the standard deviations of the elements of ^ yy N , and they ... Limiting Behavior of Estimators and Test Statistics In this section, we apply the previous concepts to sequences of estimators. Because estimators depend on the random outcomes...

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... Linear Model and OLS Estimation 53 II LINEAR MODELS In this part we begin our econometric analysis of linear models for cross section and panel data. In Chapter 4 we review the single-equation linear ... for cross section data as well as begin our analysis of panel data. Chapter 8 builds on the framework from Chapter 7 but considers the case where some expl...

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... quarters of birth and various interactions of these with year of birth and state of birth—are very weak, and they are too numerous relative to their contribu- tion in explaining years of education. ... ! ¼ðZ 0 XÞ À1 Z 0 Y where Z and X are N  K data matrices and Y is the N Â1 data vector on the y i . The consistency of this estimator is immediate from equation (5 .1...

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... confuse a pooling of independent cross sections with a di¤erent data structure, panel data, which we treat starting in Chapter 7. Briefly, in a panel data set we follow the same group of individuals, ... case of the White test because ð ^ yy i ; ^ yy 2 i Þ con- tains two linear combinations of the squares and cross products of all elements in x i . Additional Single...

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