Science Education Resource Center at Carleton College
Serc: Reasoning About Center and Spread: How Do Students Spend Their Time?
Using their own habits for data, students predict how much time they spend on different activities each day, and how much variability each activity is likely to have. They then collect data into a class spreadsheet and look at the...
Khan Academy
Khan Academy: Center and Spread Lesson
The resource from Khan Academy provides practice questions for the Praxis Core Math Test. This section reviews probability and statistics questions connected to the center and spread of data in a collection.