Math 1530-017 Exam 1 February 19, 2009
Name Student Number E
There are ve possible responses to each of the following multiple choice questions. There is only on "BEST" answer. Be sure to read all possible choices before selecting your answer. You may mark on this examination. You should use a calculator, but it is not required. However, a calculator manual cannot be used. Each problem is worth 7 points (for a total of 266 points). 1. Dene the word DISTRIBUTION (used in the statistical sense). (a) Measurements that are collected at regular intervals over a period of time. (b) The values taken by a variable, among a group of "individuals," and the frequency with which it takes those values. (c) The number of "individuals" falling into some group or category. (d) A proportion or the ratio of some part relative to the whole. (e) The scaled axis system used for a graph or plot. 2. Here is a small part of a data set that describes the fuel economy (in miles per gallon) of 2006 model motor vehicles. Make and model . . . Audi TT Roadster Cadillac CTS Dodge Ram 1500 Ford Focus . . . Vehicle type Two-seater Midsize Pickup truck Compact Transmission type Manual Automatic Automatic Automatic Number of cylinders 4 6 8 4 City Highway MPG MPG 20 18 14 26 29 27 19 32
Which of the following is true of this data (a) The individuals of the data set are the mileages. (b) Transmission type is a quantitative variable. (c) The Cadillac CTS is an outlier. (d) The distribution is skewed right. (e) Mileage is a quantitative variable. 3. In 1995 there were 90,402 deaths from accidents in the United States. Among these were 43,363 deaths from motor vehicle accidents, 10,483 from falls, 9,072 from poisoning, 4,350 from drowning, and the rest were due to other causes. What type of graph or display would NOT be appropriate to use in presenting this information (a) Bar graph. (b) Frequency table. (c) Histogram. (d) None of the above listed displays is appropriate. (e) Pie chart.

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