Key Concept 9.2 describes the problem of variable selection in terms of a trade-off between bias and

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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 control variable decrease bias? Increase variance?

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Introduction To Econometrics

ISBN: 9780134461991

4th Edition

Authors: James Stock, Mark Watson

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