Unit 3 · Lesson 3.5 · Start1 / 10
Unit 3 · Lesson 3.5
3.5
When the numbers mislead
Three notices. “Average journey: 20 minutes.” “Our app is 80% accurate.” “90% say snow doesn't stop them.” None is a lie.
Today you will
- Split an average that hides two groups
- Distrust a percentage without a count
- Ask who a survey couldn't reach
40 min On the laptop