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Statistical Models and Causal Inference by Jasjeet S. Sekhon, David Collier, David A. Freedman

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4Methods for Census 2000 and Statistical Adjustments

With Kenneth W. Wachter

        ABSTRACT. The U.S. Census is a sophisticated, complex undertaking, carried out on a vast scale. It is remarkably accurate. Statistical adjustment is unlikely to improve on the census, because adjustment can easily introduce more error than it takes out. The data suggest a strong geographical pattern to such errors even after controlling for demographic variables, which contradicts basic premises of adjustment. In fact, the complex demographic controls built into the adjustment process seem on whole to have been counter-productive.

4.1  Introduction

        The census has been taken every ten years since 1790, and provides a wealth of demographic information for ...

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