Logic / Unit 9 Logic 434 short lesson, about 20 seconds
Statistical Claims in Media
Captions available
The idea
Four questions for every reported number: What's the source? What was the sample? What's the base rate? Compared to what?
In practice
"Risk doubled" — from one in a million to two. All four questions, one headline, verdict reversed.
Where people slip
Relative risk without base rate (350) is the press release's favorite instrument. The four questions take fifteen seconds; skipping them is a choice.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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