Session 2 Family Guide

Data Science for Young Minds — Tips for families facilitating Session 2: What Is Typical? The Mean

Overview

Learn to calculate the average (mean) and understand what 'typical' looks like in a dataset. Discover when the average can mislead.

Facilitating Each Lesson

Lesson 1: What Is the Average?

Tip: Learn what the mean is, how to calculate it, and what it tells you about a group. Take time to let your child explore and share their thoughts.

Try asking: "What do you think about what 'average' means in everyday language vs. math?"

Lesson 2: When the Average Lies

Tip: Discover how extreme values (outliers) can pull the mean away from what is truly typical. Take time to let your child explore and share their thoughts.

Try asking: "What do you think about how one extreme value changes the mean dramatically?"

Lesson 3: Comparing Groups With Averages

Tip: Use the mean to compare two groups fairly. Learn what a meaningful difference looks like. Take time to let your child explore and share their thoughts.

Try asking: "What do you think about using the mean to compare two classes, teams, or groups?"

Lesson 4: Averages in the Real World

Tip: Explore how averages are used (and misused) in sports, school, weather, and daily life. Take time to let your child explore and share their thoughts.

Try asking: "What do you think about batting averages in sports?"

Conversation Starters

"What did you learn about what 'average' means in everyday language vs. math?"
"What did you learn about how one extreme value changes the mean dramatically?"
"What did you learn about using the mean to compare two classes, teams, or groups?"
"What did you learn about batting averages in sports?"