This lesson is designed to introduce students to the concept of confidence intervals for population means and proportions. Students will use Dollar Street, a website that allows individuals to explore income and how people live around the world using both numbers and pictures as data, to identify a variable, select a sample, and generate a confidence interval in order to make inferences about their chosen population. In addition, students will think about the limitations of their inferences in light of their sample size and the sampling process.
- Identify categorical and measurement variables.
- Generate appropriate numerical summaries and graphical displays
- Produce approximate confidence intervals from sample data
- Use confidence intervals to make inferences about population
- Discuss limitations of confidence intervals in light of sample size and sampling process