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The Impact Of Temperature On Labor Quality: Umpire Accuracy In Major League Baseball, Eric Fesselmeyer
The Impact Of Temperature On Labor Quality: Umpire Accuracy In Major League Baseball, Eric Fesselmeyer
Research Collection College of Integrative Studies
Using data from Major League Baseball, I compute an objective measure of the home plate umpire's work quality-the accuracy of his ball and strike calls during a game-and measure how it varies with temperature. I find that an increase in game-time temperature from between 70 and 80 degrees F to above 95 degrees F decreases an umpire's accuracy by a little less than a percentage point, which is a 5.5% increase in the pitch-calling error rate when evaluated at the mean error rate of 13.3%. Restricting the sample to borderline pitches increases the magnitude of the hot-weather effect on accuracy …
The Impact Of Temperature On Labor Quality: Umpire Accuracy In Major League Baseball, Eric Fesselmeyer
The Impact Of Temperature On Labor Quality: Umpire Accuracy In Major League Baseball, Eric Fesselmeyer
Research Collection College of Integrative Studies
Using data from Major League Baseball, I compute an objective measure of the home plate umpire's work quality-the accuracy of his ball and strike calls during a game-and measure how it varies with temperature. I find that an increase in game-time temperature from between 70 and 80 degrees F to above 95 degrees F decreases an umpire's accuracy by a little less than a percentage point, which is a 5.5% increase in the pitch-calling error rate when evaluated at the mean error rate of 13.3%. Restricting the sample to borderline pitches increases the magnitude of the hot-weather effect on accuracy …