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Professor Green discusses the definition of consistent aggregation and the problem of grouping variables in a single equation; he deals with the aggregation of equations and the probable errors; and summarizes, with reference to the text, the considerations involved in selecting an appropriate form of aggregation. The author’s survey presents a well-balanced overview and analysis of aggregation, and makes readily accessible for the first time much material otherwise difficult to obtain.

Originally published in 1964.

The ¿ìÉ«Ö±²¥ Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of ¿ìÉ«Ö±²¥. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the ¿ìÉ«Ö±²¥ Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by ¿ìÉ«Ö±²¥ since its founding in 1905.