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Nature's Scorecard for Feeder Steers

Texas Agricultural Experiment Station

Abstract

Body measurements of cattle have been made at many experiment stations in this country and even more extensively on the continent of Europe, particularly in Germany and Holland. The analysis of such data has usually been postponed or has been accomplished only by the simple method of correlation. Probably the most notable example of the use of the simple method of correlation in analysis of such data in this country is the work of Severson and Gerlaugh¹ at the Pennsylvania Station. Their method of grouping together in one correlation table all the data bearing upon the two characteristics correlated, regardless of whether the steers so concerned were fed the same ration or were under the same weather conditions, has undoubtedly tended to give lower values to the primary correlation coefficients than the facts of the case would warrant. Nevertheless, their published results are very suggestive of what may be accomplished along this line, and some at least of their original data are published in such form as to be available for recalculation and multiple or partial correlation.