Question 1 what is the difference between internal and, Ask an Expert

Economics

Question: 1. What is the difference between internal and external validity? Between the population studied and the population of interest?

2. Key Concept 9.2 describes the problem of variable selection in terms of a trade-off between bias and variance. What is this trade-off? Why could including an additional regressor decrease bias? Increase variance?

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Macroeconomics, Economics

Category:- Macroeconomics
Reference No.:- M92252912

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