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World 6 · Who Asked? Sampling and Graphs That Lie · 14 min · PRO

2.4 million answers and still wrong

The 1936 poll

PRO · Data Detective

World 6: Who Asked? Sampling and Graphs That Lie is part of PRO

The first world of Data Detective is free. PRO opens the other 25 lessons in 6 worlds — simulations, quizzes and all.

  • The wrong crowd
  • How sure can a poll be?
  • The axis trick
  • Reading charts like a detective
  • Luck looks lumpy
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