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Data & ProbabilityStatistics

The Bell Curve Machine

Bouncing balls always pile up into the same shape

Every ball bounces at random, so nobody can say where it will land. Then why does the pile always come out the same?

You'll find out

  • What a wall of pegs does to a ball
  • Why the middle always wins
  • The piles that refuse to be bells

Why it matters

The same hill shows up in heights, test scores and measuring errors. Once you see why, statistics stops being magic.

About 3 min6 interactive slides · 5 questionsLesson 126 · Zone 14

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