Lesson 8 of 9 · Data and Evidence
Lesson⭐ 30 XPAverages Can Hide the Story
Data and Evidence.
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
Nature loves to surprise the careful watcher.
Mind = Blown
🔬 The more you look, the more nature shows you.
Make a hypothesis first
Before you start: write down what you think will happen, and why.
What You'll Learn
Two classes can share a mean test score of 60 while one has everyone near 60 and the other has half at 30 and half at 90. The mean alone is not enough; you also need to know the spread.
Key Words
Tap a word to see its definition.
Steps
Read the explanation above and note the two key terms before you start.
Given two data sets with the same mean but different spreads, calculate the mean and range of each and draw both as bar charts. Write one sentence saying what the mean alone missed.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2Two data sets with the same mean:
Where you see this in real life
This shows up in your everyday life more than you'd think.
Stretch Challenge
Try this in real life this week.
Try one experiment in real life this week — even a tiny one.
For the dinner table
“What's the most surprising thing you learned today?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
Ready?
Averages Can Hide the Story
Learn the rule. Then catch nature using it.
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