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Unformatted text preview: Name: Student ID: Section: 8am 9am 3pm 4pm 5pm 6pm Statistics 13 Fall, 2009 Sample Midterm 1 Please, note, you have 50 minutes to work on this exam. It is closed book and only one page of (two-sided) sheet of notes is allowed. You may use your hand held calculator. The exam has 20 multiple choice problems, each worth 10 points. Please, hand in the marked hardcopy and scantron form. You need to mark your answers on both. A blank hardcopy is not acceptable. We will not accept scantron only. 1. The temperature in September in Davis fluctuated between 60 o F and 100 o F. Which of the following data summaries could be calculated using just this information ? (a) mean (b) variance (c) median (d) range (e) interquartile range 2. Which of the following statements is true (choose the most appropriate one)? (a) If data is left skewed mean > median (b) If data is symmetric mean = median (c) If data is right skewed mean < median (d) a and b (e) b and c 3. A politician who is running for the office of governor of a state with 9 million registered voter commissions a survey. In the survey, 45% of the 50,000 registered voters interviewed say they plan to vote for her. The population of interest is the: (a) 50,000 registered voters interviewed (b) 9 million registered voters in the state (c) 45%, or 22,500 voters interviewed who plan to vote for her (d) 55%, or 27,500 voters interviewed who plan not to vote for her...
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