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2. The basic model This section describes a simple two-period setting in which the econometrics of DiD are well-understood. Although this ''canonical'' setting is arguably too simple for most applications, clearly articulating the assumptions in this setup serves as a useful baseline for ...
Business What is a bond convexity?Question:What is a bond convexity?ConvexityConvexity is a crucial concept in economics. The usual tool for assessing textbook economics is the convex analysis, and the nonsmooth analysis, which generalizes convex analysis, has been used to study nonconvex ...
Policy makers devote much attention to enhancing productivity and emphasize its drivers such as R&D investments but in order to put effective economic and industrial policies into practice, they must have satisfactory answer to the following question: what is the optimal amount of R&D investments that...
What are the three standard uses of econometrics? What is the difference between R Square and Adjusted R Square in multiple regression? Why do we need to calculate both of these statistics? Is logistic regression sensitive to outliers? If not, why not? ...
Footnote 4 If pre-school or post-school experiences have significant impacts on the cognitive skills of adults and are correlated with schooling—as is likely if there is correlation among human capital investments across life-cycle stages—analyses that use school attainment alone to represent adult...
In a hypothesis test of the difference between two population means, if the probability of Type II error is 0.25, then: A. The probability of Type I error is 0.75 B. The probability of reject H0, given that H0, is false is 0.75 C. The probability of rejec Econo...
Years ago one of my econometrics profs mentioned an economics methodology called “particle filtering.” Most economists have physics envy, John. They’ve had it since the 1950s, when Friedman played an important role in convincing the majority of economists that they can do economics by mimicking...
Demography, fertility, and the share of children in the population change the child role in society by regulating the labour supply of children which in turn influences child labour practice. Lack of income forces families to send children to work, and once a certain income level is reached ...