MA 204 Statistics Practice Test 1 Chapters 1, 2, 9
1. Gallup sampled 1200 Americans and asked the question, “Do you approve of the methods
used by President Bush to fight terrorism?” Will the results be used in a descriptive way or
an inferential way? [5 points]
2. A questionnaire contained the question: “How old are you?” Would the responses to this
question yield qualitative or quantitative data? [5 points]
3. A web site for Democrats offers readers an opportunity to give their predictions for the next
candidate for President. Can the responses be considered a random sample of all American
Democrats? (Explain why or why not.) What (if any) bias might be present in this
sample? [6 points]
4. The following boxplot represents the ages of actors at the time they won an Oscar.
[6 points]
30
40
50
60
70
80
ages
Based on this graph, describe a “typical” age for an Oscar winner. Discuss central tendency
and variability.
