How should pro sports teams spend their money? Professional sports teams hundreds of millions of dollars on player salaries, and conventional wisdom says that teams with higher payrolls perform better. But maybe conventional wisdom is wrong.

In this lesson, use linear regressions and r-squared values to analyze data from professional sports leagues, evaluate how various factors correlate with wins, and debate whether a higher payroll is good business strategy.

Students will

  • Interpret the slope and intercept of linear regression in the context of real-world data
  • Interpret R-square value for linear regressions
  • Use linear regressions to justify decision-making

Before you begin

Students should have developed the concept of R-square values. They will interpret (but not calculate) R-square values in this lesson.

Common Core Standards

Content Standards
Mathematical Practices