Cannabis users not so way out

  1. What questions would you ask of the Northern Rivers Health Service about how the sample in this study was chosen?
  2. How would you define a "long term cannabis user"? Does the median value given for length of use help with your decision? How?
  3. Do you think there is any relationship between age and length of cannabis use? What restraints might age place on use? Sketch a scatter plot of what the relationship might look like.
  4. Why do you think two words, "average" and "median" were used in the last paragraph? What measure do you think "average" is most likely to apply to? Explain why.

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