StatTutor Lesson - Association Does Not Imply Causation

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      Question 1

      172

      Question 1.

      There is a strong positive correlation between the number of firefighters at a fire and the amount of damage the fire does. Does sending more firefighters cause greater damage?

      A.
      B.

      Incorrect. A larger fire requires more firefighters to put it out and it also causes more damage.
      Correct. A larger fire requires more firefighters to put it out and it also causes more damage.
      Incorrect. Try again.
      2

      Questions 2-3

      285

      Question 2.

      True or false: If r is close to +1.0, then changes in the X variable cause changes in the Y variable.

      A.
      B.

      Incorrect. We always say that association is not causation. An “r” value close to +1.0 might be the result of a lurking variable and not the X variable.
      Correct. We always say that association is not causation. An “r” value close to +1.0 might be the result of a lurking variable and not the X variable.
      Incorrect. Try again.
      2

      Question 4

      383

      Question 4.

      True or false: If an experiment is not possible, causation can still be established by meeting several criteria using the results of many studies.

      A.
      B.

      Incorrect. This is a correct statement.
      Correct. This is a correct statement.
      Incorrect. Try again.
      2