Chapter 8 Statistics

Introduction to Statistics

Three women playing basketball.
Figure 1. Statistics can be used to decide on a fair salary for sports stars. (credit: “Jasmine Powell goes up for a shot in a game against Jacksonville” by Lorie Shaull/Flickr, CC BY 2.0)
Before the 2021 WNBA season, professional basketball player Candace Parker signed a contract with the Chicago Sky, which entitled her to a salary of $190,000. This amount was the twenty-third highest in the league at the time. How did the team’s management decide on her salary? They likely considered some intangible qualities, like her leadership skills. However, much of their deliberations probably took into account her performance on the court. For example, Parker led the league in rebounds in the 2020 season (214 of them) and scored 14.7 points per game (which ranked her eighteenth among all WNBA players). Further, Parker brought thirteen seasons of experience to the team. All of these factors played a role in deciding the terms of her contract.


Estimating the value of one variable (like salary) based on other measurable variables (points per game, experience, rebounds, etc.) is among the most important applications of statistics, which is the mathematical field devoted to gathering, organizing, summarizing, and making decisions based on data.


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