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TEST BANK for Introduction to Probability and Statistics, 3rd Canadian Edition by Mendenhall, Beaver, Robert, Ahmed. ISBN. (Complete 15 Chapters)£25.81
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TEST BANK for Introduction to Probability and Statistics, 3rd Canadian Edition by Mendenhall, Beaver, Robert, Ahmed. ISBN. (Complete 15 Chapters)
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Introduction to Probability and Statistics
Institution
Introduction To Probability And Statistics
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Introduction to Probability and Statistics
TEST BANK for Introduction to Probability and Statistics, 3rd Edition by Mendenhall, Beaver, Robert, Ahmed. ISBN13 9804. TABLE OF CONTENTS: Chapter 1—Describing Data with Graphs Chapt er 2—Describing Data with Numerical Measures Chapter 3—Describing Bivariate Data Chapter 4A—Probability and...
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,Chapter 1—Describing Data with Graphs
MULTIPLE CHOICE
1. Which of the following choices best describes the methods dealt with by the branch of
statistics called descriptive statistics?
a. organizing and summarizing data
b. quantifying and summarizing data
c. qualifying and quantifying data
d. qualifying and organizing data
ANS: A PTS: 1 REF: 5 TOP: 1–3
BLM: Remember
2. How is the relative frequency of a class computed?
a. by dividing the frequency of the class by the number of classes
b. by dividing the frequency of the class by the class width
c. by dividing the frequency of the class by the total number of observations in the
data set
d. by dividing the frequency of the class by one less than the total number of
observations in the data set
ANS: C PTS: 1 REF: 14 | 27-29 TOP: 1–3
BLM: Remember
3. Which of the following is NOT a goal of descriptive statistics?
a. summarizing data
b. displaying aspects of the collected data
c. reporting numerical findings
d. estimating characteristics of populations
ANS: D PTS: 1 REF: 5 TOP: 1–3
BLM: Remember
4. You asked ten of your classmates about their weight. On the basis of this information, you
estimated that the average weight of all students at your school is 71.8 kilograms. What is
this an example of?
a. descriptive statistics
b. statistical inference
c. a sample
d. a population
ANS: B PTS: 1 REF: 5 TOP: 1–3
BLM: Higher Order - Understand
5. Which is the best type of chart for comparing two sets of qualitative data?
a. a line chart
b. a pie chart
c. a histogram
d. a bar chart
, ANS: D PTS: 1 REF: 20-21 TOP: 1–3
BLM: Higher Order - Understand
6. What does the sum of the frequencies for all classes always equal?
a. the number of classes
b. the class width
c. the total number of observations in the data set
d. one
ANS: C PTS: 1 REF: 14 TOP: 1–3
BLM: Remember
7. What are the two graphical techniques most commonly used to present qualitative data?
a. bar chart and histogram
b. bar chart and pie chart
c. line chart and pie chart
d. line chart and histogram
ANS: B PTS: 1 REF: 20-21 TOP: 1–3
BLM: Remember
8. What are the characteristics of experimental units generally called?
a. data sets
b. descriptive statistics
c. internal data
d. variables
ANS: D PTS: 1 REF: 10 TOP: 1–3
BLM: Remember
9. A politician who is running for office in a province with 3 million registered voters
commissions a survey. In the survey, 5500 of the 10,000 registered voters interviewed say
they plan to vote for her. Which of the following is the population of interest?
a. the 3 million registered voters in the province
b. the 10,000 registered voters interviewed
c. the 5500 voters interviewed who plan to vote for her
d. the 4500 voters interviewed who plan not to vote for her
ANS: A PTS: 1 REF: 10 TOP: 1–3
BLM: Higher Order - Understand
10. Which of the following terms refers to the set of all possible observations about a specified
characteristic of interest?
a. a frame
b. a multinomial data set
c. an observational study
d. a population
ANS: D PTS: 1 REF: 10 TOP: 1–3
BLM: Remember
, 11. What is a single observation about a specified characteristic of interest called?
a. a datum
b. an elementary unit
c. a sample
d. a univariate data set
ANS: A PTS: 1 REF: 10 TOP: 1–3
BLM: Remember
12. Which of the following terms refers to a graphical presentation of data that is displayed in
order of descending magnitude?
a. a line chart
b. a stem-and-leaf plot
c. a relative frequency histogram
d. a Pareto chart
ANS: D PTS: 1 REF: 16 TOP: 1–3
BLM: Remember
13. A market share of 78.5% can be represented in a pie chart by a slice having a central angle
measured in degrees. In this case, what would be the size of the central angle of the market
share?
a. 39.3 degrees
b. 78.5 degrees
c. 141.3 degrees
d. 282.6 degrees
ANS: D PTS: 1 REF: 14-16 TOP: 1–3
BLM: Higher Order - Apply
14. Which of the following graphics is the most important and most commonly used graphical
presentation of quantitative data?
a. the bar chart
b. the histogram
c. the pie chart
d. the dotplot
ANS: B PTS: 1 REF: 27-28 TOP: 4–5
BLM: Remember
15. What is the total area of the six bars in a relative frequency histogram for which the width of
each bar is ten units?
a. 6
b. 10
c. 16
d. 60
ANS: B PTS: 1 REF: 27-29 TOP: 4–5
BLM: Higher Order - Understand
16. On what does the total area of the bars in a relative frequency histogram depend?
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