Multiple Choice Review Chapters 1 - 3

1) Following are the SAT math scores for an AP Statistics class of 20 students: 664, 658, 610, 670, 640, 643, 675, 650, 676, 575, 660, 661, 520, 667, 668, 635, 671, 673, 645, 650. The distribution of scores is A. symmetric C. skewed to the right D. uniform E. bell shaped B. skewed to the left

2) Which of the following distributions are more likely to be skewed to the right than skewed to the left? I. Household incomes II. Home prices III. Ages of teenage drivers II only C. I and III D. II and III E. I, II, and III B. I and II

D. A long tail on both sides E. More than one mode. A symmetric distribution can’t have which of the following characteristics? A. Gaps B. Outliers D. A long tail on both sides E. More than one mode. C. A long tail on one side C. A long tail on one side

4) Fill in the blank. One advantage of the ________ is that the actual data values are retained in the graphical summarization of the data. box plot C) pie chart D) histogram B) stem plot

5) School administrators collect data on students attending the school 5) School administrators collect data on students attending the school. Which of the following variables is quantitative? A) grade point average B) class (freshman, soph., junior, senior) C) whether the student has taken the SAT D) whether the student is in AP classes E) none of these

I II III A) I, II C) I D) I, III B) I, II, III The Centers for Disease Control lists causes of death for individual states in 2002. The mortality data for one state is given. Which of the following displays is/are appropriate for these data? (More than one display may be appropriate.) I II III A) I, II C) I D) I, III B) I, II, III

7) Describe the distribution of the age of high school students. The distribution would likely be unimodal and slightly skewed to the right. The average age of the high school students would be about the same. The distribution would be slightly skewed to the right, since there are more seniors. The distribution would likely be bimodal and slightly skewed to the right. The average age of the freshman and sophomores would be at one mode, and the average age of the juniors and seniors would be at the other mode. The distribution would be slightly skewed to the right, since there are more seniors. The distribution would likely be unimodal and symmetric. The average age of the high school students would be about the same, with some students that are older and some that are younger than the average age. D) The distribution would likely be uniform. Freshmen tend to be about 14 years old; sophomores, 15; juniors, 16; and seniors, 17. Since there is about an equal number of students in each class, the distribution is uniform.

Under 30 30 – 49 Over 50 Low 27 38 31 Normal 48 90 92 High 23 59 72 8) A company held a blood pressure screening clinic for its employees. The results are summarized in the table below by age group and blood pressure level. Find the marginal distribution of blood pressure level. Under 30 30 – 49 Over 50 Low 27 38 31 Normal 48 90 92 High 23 59 72 20% under 30, 39% between 30-49, 41% over 50 B) 25% low, 92% normal, 47% high D) 28% low, 49% normal, 23% high E) 20% low, 39% normal, 41% high C) 20% low, 48% normal, 32% high

What percent of the time was the forecast correct? 9) Just how accurate are the weather forecasts we hear every day? The table below compares the daily forecast with a city's actual weather for a year. What percent of the time was the forecast correct? Actual Weather Rain No Rain 27 59 10 269 Forecast 76.4 % B) 73.7 % D) 7.4 % E) 18.9 % C) 81.1 %

10) A local park district is planning to build a recreation center 10) A local park district is planning to build a recreation center. The park district conducted a poll to find out the types of physical activities the local population would be interested in. The poll was based on telephone responses from 1013 randomly selected adults. The table shows the percentages of people who expressed interest in various activities. What percent of adults polled did not express interest in any of these activities? 181% B) 81% C) 91% D) 19% E) The percent cannot be determined from the given percentages because the categories overlap.

11) Students in a political science course were asked to describe their politics as "Liberal", "Moderate", or "Conservative." Here are the results What percent of the females in the class consider themselves to be "Liberal"? Politics Gender 41.6 B) 42.4 D) 45.2 E) 45.3 C) 50.6

B 2) B 3) C 4) B 5) A 6) B 7) D 8) C 9) C 10) E 11) C Multiple Choice Review Chapters 1 - 4 B 2) B 3) C 4) B 5) A 6) B 7) D 8) C 9) C 10) E 11) C