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4-44.

As you discovered in the asteroid activity in Lesson 4.1.2, people are not very good at picking representative samples. Similarly, it is actually quite difficult to “fake” randomness.

Student taking survey from a personIn this problem, you will perform a brief survey to get an idea of people’s “random” behavior. For this particular survey, you are not concerned with any particular population, so you can choose any sample that is convenient. You should talk with at least ten people among your friends and family, but try for more to make your results more interesting.

Use the same survey method for everyone: text messaging, phone call, or personal interview. Carefully record the responses you get. Homework Help ✎

  1. Ask each of your respondents to make each of the following choices randomly. Make sure you read the choices exactly the same way to each respondent.

  1. Pick a number between 1 and 4.

  2. Pick a vowel (a, e, i, o, or u).

  3. Choose a color.

  1. Make a bar graph for the responses to each of the three statements in your survey. Write the precise wording of the statement with each bar graph.

  2. Do your results show that the people’s choices were truly random?
    Why or why not?

  3. Try to explain any trends or interesting patterns that you observe.
    Are the results similar to what you expected? Why or why not?

  4. Why would using a mass email or a social networking site not be a good plan?

Before you start your survey, decide exactly how you want to word your questions. Write them down, so you can read them the same way to each person you survey.
Answers will vary.