WebWork Chapter 1 Quiz

The number of students in the seminar who are juniors is _____.

1

The lowest score in the class as a percentage of the total possible points is ____%.

58

To which of the following data sets does this stemplot correspond? A. 116, 118, 121, 124, 128, 133, 137, 142, 146, 179 B. 1, 2, 3, 4, 6, 6, 7, 8, 8, 9 C. 16, 18, 21, 24, 28, 33, 37, 42, 46, 79 D. all integers between 116 and 179

A. 116, 118, 121, 124, 128, 133, 137, 142, 146, 179

If you bought a single share of stock at the maximum price and sold it at the minimum price during this one-year period, you would have lost about A. 15 dollars. B. 45 dollars. C. 35 dollars. D. 25 dollars. E. Cannot be determined from the graph.

A. 15 dollars.

Below is a bar graph of class standing for a Finance seminar containing five students who are either freshman, sophomores, juniors, or seniors. In the bar graph the bar for the juniors has been omitted. The percentage of students in the seminar who are not juniors is A. 80% B. 20% C. 40% D. 60% E. None of the above.

A. 80%

The information displayed in the pie chart can also be displayed in a A. bar chart. B. scatter plot. C. timeplot D. histogram. E. None of the above.

A. bar chart.

To display the distribution of grades (A, B, C, D, F) in a course, it would be correct to use A. either a pie chart or a bar graph. B. a pie chart but not a bar graph. C. a bar graph but not a pie chart. D. None of the above.

A. either a pie chart or a bar graph.

In drawing a histogram, which of the following suggestions should be followed? A. The scale of the vertical axis should be that of the variable whose distribution you are displaying. B. The heights of bars should equal the class frequency. C. Leave large gaps between bars. This allows room for comments. D. Generally, bars should be square so that both the height and width equal the class count.

B. The heights of bars should equal the class frequency.

A description of different houses on the market includes the following three variables. Which of the variables is quantitative? A. The exterior paint colors. B. The monthly electric bill. C. The street number. D. The school district. E. None of the above.

B. The monthly electric bill.

The timeplot below gives the share price in dollars of General Electric stock, with the bar chart giving the volume in millions of shares. The plots are for the one-year period September 2001-September 2002. Which of the following is a true statement? A. There has been a general upward trend in the stock price over this time period. B. There has been a general downward trend in the stock price over this time period. C. The price should return to 40 dollars within six months because of the cycle. D. The price of General Electric stock has been stable for this year. E. None of the above

B. There has been a general downward trend in the stock price over this time period

For a Physics course containing 10 students, the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. This stemplot is most similar to A. a time plot of the data with the observations taken in increasing order. B. a histogram with class intervals between 110 and 120, between 120 and 130, etc. C. reporting the 5-point summary for the data, with the mean. D. a boxplot of the data. E. None of the above.

B. a histogram with class intervals between 110 and 120, between 120 and 130, etc.

Here are the amounts of money (cents) in coins carried by 10 students in a statistics class: 50 35 0 97 76 0 0 87 23 65 To make a stemplot of these data, you would use stems A. 0, 2, 3, 5, 6, 7, 8, 9. B. 00, 10, 20, 30, 40, 50, 60, 70, 80, 90. C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. D. None of the above.

C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

The maximum price per share for this time period was about A. 20 dollars. B. 25 dollars. C. 41 dollars. D. 45 dollars. E. None of the above.

C. 41 dollars.

The interval that contains closest to 10 students is A. 74-80 inches. B. 56-68 inches. C. 68-71 inches. D. 59-65 inches. E. None of the above.

C. 68-71 inches.

A political party's data bank includes the zip codes of past donors, such as 47906 34236 53075 10010 90210 75204 30304 99709 Zip code is a: A. Quantitative variable. B. Unit of Measurement. C. Categorical variable. D. None of the above.

C. Categorical variable.

Consumers Union measured the gas mileage in miles per gallon of 38 1978-79 model automobiles on a special test track. The pie chart below provides information about the country of manufacture of the model cars used by Consumers Union. Based on this pie chart, we may conclude that A. Japanese cars get significantly lower gas mileage than cars of other countries. This is because their slice of the pie is at the bottom of the chart. B. Mercedes Benz, Audi, Porsche, and BMW represent approximately one quarter of the cars tested. C. more than half of the cars in the study were from the United States. D. Swedish cars get gas mileages that are between those of Japanese and American cars. • E. None of the above.

C. more than half of the cars in the study were from the United States.

A survey records many variables of interest to the researchers conducting the survey. Below are some of the variables from a survey conducted by the U.S. Postal Service. Which of the variables is categorical? A. Number of people, both adults and children, living in the household. B. Total household income, before taxes, in 1993. C. Age of respondent. D. County of residence. E. None of the above.

D. County of residence.

Consider the histogram given below: Which of the following is a correct statement? A. Approximately half the students have heights between 65 and 71 inches. B. The tallest person must have a height of at least 79 inches. C. The histogram is symmetric. D. None of the above are correct

D. None of the above are correct

When drawing a histogram it is important to A. make sure the heights of the bars exceed the widths of the class intervals so that the bars are true rectangles. B. have a separate class interval for each observation to get the most informative plot. C. make certain the mean and median are contained in the same class interval, so that the correct type of skewness can be identified. D. label the vertical axis so the reader can determine the counts or percent in each class interval. E. None of the above.

D. label the vertical axis so the reader can determine the counts or percent in each class interval.