An analyst forecasts corporate earnings, and her record is evaluated by comparing actual earnings with predicted earnings.

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An analyst forecasts corporate earnings, and her record is evaluated by comparing actual earnings with predicted earnings. Define the following:
actual earnings = predicted earnings + forecast error.
If the predicted earnings and forecast error are independent of each other, show that the variance of predicted earnings is less than the variance of actual earnings.
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Statistics For Business And Economics

ISBN: 9780132745659

8th Edition

Authors: Paul Newbold, William Carlson, Betty Thorne

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