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Planning Our Data Investigation

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Planning Our Data Investigation

Tui, Ari and Mere are helping plan a survey for a local chess tournament. Use the scenario and your data skills to design a fair, useful investigation. Show your thinking in the answer spaces.

The investigation

The organisers want to learn how players travel to the tournament and how many games each player expects to play. The survey team can ask up to 30 players before the first round. They want results that are clear, fair and useful for planning next year’s event.

1.Which is the best main investigative question for the organisers?
  • What is the most common way players travelled to this tournament?
  • Do you agree that chess is the best game?
  • Why are tournaments always too crowded?
2.Classify each variable as categorical or numerical: (a) travel method, such as walking or bus; (b) number of games a player expects to play.
3.Ari suggests asking, “You came by car, didn’t you?” Explain why this is a poor survey question and rewrite it so it is neutral.
4.The team surveys only the first 10 players who arrive. What could make this sample unrepresentative, and how could they improve it?
5.Which answer list is best for the travel-method question?
  • Walk, bicycle, car, bus or train, other
  • Good, okay, bad
  • A number from 1 to 10
6.Write one clear, neutral survey question to find out how many games each player expects to play. Include a suitable answer format.
7.Before asking players, Tui explains what the survey is for and says they may choose not to answer. Is this a sensible approach? Give one reason.
8.The team hopes most players will travel by car. Is this a prediction or a result? What should they do with it?
9.Choose a useful way to display the answers to “How did you travel?” and explain why it fits.
10.Write a short investigation plan that names who you will survey, how you will choose them fairly, and one way you will protect their privacy.

2 printable pages

  • Planning Our Data Investigation, page 1 of 2: The investigation

    Page 1

  • Planning Our Data Investigation, page 2 of 2: 5. Which answer list is best for the travel-method question?

    Page 2

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