Wine, Women, Men, and Type II Error*

Jeffrey C. Bodington

Journal of Wine Economics, 2017, vol. 12, issue 2, 161-172

Abstract: More than forty published works show that women and men differ in their taste preferences for sweet, salt, sour, bitter, fruit, and other flavors. Despite those differences, dozens of state fair and other wine competitions determine winners' ribbons, medals, scores, and ranks by pooling the opinions of female and male judges. This article examines twenty-three blind wine tastings during which female and male judges scored more than nine hundred wines. Two-sample t-test results show that the gender-specific distributions of scores do have similar means and standard deviations. Exact p-values for two-sample chi-square tests show that the distributions of men's and women's scores are not significantly different, and exact p-values for likelihood ratio tests of Plackett-Luce model results show that the genders' preference orders are not significantly different. The correlation coefficient between women's and men's scores is weakly positive in 90 percent of the tastings. On that evidence, indications that the genders prefer different wines are difficult to detect. If such differences do exist, as the nonwine literature implies, the results of this analysis show that those differences are small compared to non-gender-related idiosyncratic differences between individuals and random expressions of preference. The potential for accept-a-false-null-hypothesis Type II error when pooling female and male judges' wine-related opinions appears to be small. (JEL Classifications: A10, C10, C00, C12, D12)

Date: 2017
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