Activity

Educational Attainment and Marriage Age - Testing a Correlation Coefficient's Significance

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This Educational Attainment and Marriage Age - Testing a Correlation Coefficient's Significance activity also includes:

Do women with college degrees get married later? Using a provided scatter plot of the percentage of women who earn bachelor's degrees and the median age at which women first get married over time, pupils conduct a linear regression analysis of the data. They create a regression equation, interpret the slope and y-intercept of the best-fit line, calculate a correlation coefficient, and decide whether the relationship is statistically significant.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Challenge the class to perform similar analyses with other data sets from the US Census
Classroom Considerations
  • Scholars should be familiar with null and hypothesis testing, as well as the meaning of significance levels
  • Knowledge of linear regression is necessary
Pros
  • Provides optional directions for determining the correlation coefficient on a TI-84 graphing calculator
  • Includes student worksheets with sample responses for instructors to reference
Cons
  • None