At these speeds, not every measurement is going to be taken exactly as the same anatomical location and angle. The accuracy of the carcass measurements either in the development of the prediction equations or subsequent pig data substantially reduce the ability to accurately evaluate pigs of different genetic populations and sexes. Measurement errors should always be minimized, especially in the data used to develop the prediction equations. Prediction equations should undergo evaluation of potential biases before widespread use. Combinations of measurement errors for Model Data, used to derive regression equations, and Pig Data, used to evaluate those equations.
Least squares means for the variance ratio statistic.