Researchers have extensively studied the factors influencing earnings, with investments in human capital, such as education years and on-the-job training, being key variables. Inspired by this research,Ahmed decided to apply earnings functions to the field of sports economics, specifically focusing on Football Goalie salaries. He collected data on 455 goalies from the 2022 soccer season, used Ordinary Least Squares (OLS) regression along with heteroskedasticity-robust standard errors to estimate the determinants of goalies salaries.

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