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Astor, John Jacob

(Encyclopedia) Astor, John Jacob s´tr, 1763–1848, American merchant, b. Walldorf, near Heidelberg, Germany. At the age of 16 he went to England, and five years later, in 1784, he arrived in…


(Encyclopedia) econometrics, technique of economic analysis that expresses economic theory in terms of mathematical relationships and then tests it empirically through statistical research.…