Students will develop, justify, and evaluate conjectures about the relationship between two quantitative variables over time in the United States: the median age (in years) when women first marry and the percentage of women aged 25–34 with a bachelor’s degree or higher. Students will write a regression equation for the data, interpret in context the linear model’s slope and y-intercept, and find the correlation coefficient (r), assessing the strength of the linear relationship and whether a significant relationship exists between the variables. Students will then summarize their conclusions and consider whether correlation implies causation.
11-12
60 minutes
The following items are part of this activity. The items, their data sources, and any relevant instructions for viewing the source data online appear at the end of this teacher version.
Students will evaluate data by making and testing predictions using inference.
High School Math