Why is it desirable to have the explanatory variables spread out to test a hypothesis regarding 1

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Why is it desirable to have the explanatory variables spread out to test a hypothesis regarding β1 or to construct confidence intervals about β1?

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Fundamentals Of Statistics

ISBN: 9780134508306

5th Edition

Authors: Michael Sullivan

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Question Posted: Sep 07, 2018 11:35 AM

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Why is it desirable to have the explanatory variables spread out to test a hypothesis regarding 1

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Fundamentals Of Statistics

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