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Activity focus

  • counting categorical responses
  • building a frequency table
  • converting count to proportion and percentage

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Practice set

Responses to preferred drink:
  • Tea, Coffee, Tea, Juice, Tea, Coffee, Juice, Tea, Milk, Coffee
  1. Construct a frequency table.
  2. Find the relative frequency of Coffee.
  3. Find the percentage of Tea.
  4. Identify the mode.

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Answer key

    • Tea = 4
    • Coffee = 3
    • Juice = 2
    • Milk = 1
  2. 3/10 = 0.30
  3. 4/10 x 100 = 40%
  4. Tea

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MCQ traps

  • Do not divide by number of categories; divide by total observations.
  • The mode is the most frequent category, not the first category listed.