Justification: Gender (Sex) According to Rotman & Mandel (2022), the earnings of inequality between male and female workers relies heavily on Becker's human capital theory and Mincer's earnings function that serve as the cornerstone for understanding wage differentials in modern labor markets. In a nutshell, the human capital theory suggests that economic rewards are primarily based on 'productivity', and hence workers with higher productivity-enhancing characteristics will earn higher wages. Education and work experience consist of the two main components of human capital, and thus have been studied extensively. Level of Measurement: Nominal Measure of Variation Table: Gender (Sex) Recoded Mean 1.017776524 Standard Error 0.124291501 Median 0 Mode 0 Standard Deviation 7.399260021 Sample Variance 54.74904885 Kurtosis 170.8699174 Skewness 13.11398954 Range 99 Minimum 0 Maximum 99 Sum 3607 Count 3544 Confidence Level (95.0%) 0.243690115