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Activity focus

  • correlation scale
  • sign and strength
  • causation trap

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Practice set

  1. Interpret r = 0.92.
  2. Interpret r = -0.18.
  3. Which is stronger: r = -0.65 or r = 0.42?
  4. True or false: high correlation proves one variable causes the other.

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Answer key

  1. Strong positive linear association
  2. Weak negative linear association
  3. -0.65
  4. False