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Test Bank Business Statistics: A Decision Making Approach 11th Edition David Groebner, Patrick Shannon, Phillip Fry. Isbn. 9780137835393 (Chapters 1-20).€24,26
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Test Bank Business Statistics: A Decision Making Approach 11th Edition David Groebner, Patrick Shannon, Phillip Fry. Isbn. 9780137835393 (Chapters 1-20).
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Test Bank Business Statistics: A Decision Making Approach 11th Edition David Groebner, Patrick Shannon, Phillip Fry. Isbn. 9780137835393 (Chapters 1-20).
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TEST BANK Business Statistics A Decision Making Approach 11/E
Chapter 01:The Where, Why, and How of Data
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
1) Statistics is a discipline that involves tools and techniques used to describe data and draw 1)
conclusions.
2) In this course, the term business statistics refers to the set of tools and techniques that are used to 2)
convert information into meaningful data.
3) Descriptive statistics allow a decision maker to reach a conclusion about a population based on 3)
a subset from the population.
4) The editor of a local newspaper is interested in determining the percentage of subscribers who 4)
read the paper's editorials. The statistical technique that he would use is called estimation.
5) Another term for the arithmetic average is the mean. 5)
6) A sales manager has five salespeople. The following are the number of units sold by the five 6)
salespeople during the past week: {5, 13, 6, 2, 4}. Based on the data, the mean number of units
sold was 6 units.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
7) The use of charts and graphs is an example of: 7)
A) inferential statistics. B) hypothesis testing.
C) estimation. D) descriptive statistics.
8) When an administrator at a local hospital prepares a series of charts and graphs pertaining to the 8)
patients that have stayed at the hospital during the past month, she is using which general
category of statistical analysis?
A) Descriptive statistics B) Quantitative statistics
C) Inferential statistics D) Random sampling
9) Which of the following is an example of graphs used to describe data? 9)
A) Bar charts B) Histograms
C) Both A and B are correct. D) None of the above.
10) When a marketing manager surveys a few of the customers for the purpose of drawing a 10)
conclusion about the entire list of customers, she is applying:
A) descriptive statistics. B) numerical measures.
C) quantitative models. D) inferential statistics.
11) When the park ranger at Yellowstone National Park reports the average length of time that 11)
visitors spend in the park, he is using:
A) statistical charts. B) graphical tools.
C) numerical measures. D) histograms or bar charts.
1
, 12) A consumer products company is considering introducing a new product nationally. To help 12)
make the decision, it first conducts a test market by selling the product for a few months in one
city. This is an example of:
A) hypothesis testing. B) charts and graphs.
C) estimation. D) descriptive statistics.
13) A political poll that is used to indicate the percentage of voters who will vote for a particular 13)
candidate makes use of which of the following?
A) Hypothesis testing B) Numerical analysis
C) Estimation D) Both B and C
14) The company that makes a new weight loss pill claims that people who use this pill according to 14)
instructions will lose an average of 20 pounds during a four-month period. They say the claim is
based on a study of 300 people. Which of the following statistical methods was most likely used
to arrive at the company's conclusion?
A) Histograms B) Estimation
C) Hypothesis testing D) Bar charts
15) When the California Highway Patrol states that a study of drivers on a rural highway shows 15)
that the average speed is between 62.5 mph and 64.5 mph, they are most likely basing this
statement on:
A) graphical analysis. B) hypothesis testing.
C) descriptive statistics. D) estimation.
16) The summaries of data, which may be in forms of tabular, graphical, or numerical, are referred 16)
to as:
A) statistical inference. B) inferential statistics.
C) report generation. D) descriptive statistics.
17) Based on a survey of 400 students in a university in which 20 percent indicated that they were 17)
business majors. The university student newspaper reported that "20 percent of all the students
at the university are business majors." This report is an example of:
A) a population. B) statistical inference.
C) a sample. D) descriptive statistics.
ESSAY. Write your answer in the space provided or on a separate sheet of paper.
18) What is meant by the term statistical inference?
19) Discuss the differences and similarities between statistical estimation and statistical hypothesis testing.
20) Discuss the two major types of descriptive statistics.
21) What are the major categories of statistical tools that will be covered in this course?
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
22) An accountant has recently prepared a report for a client that contains a variety of graphs and 22)
charts. In doing so, she has used descriptive statistical methods.
2
, 23) Descriptive statistical tools include graphs, charts, and numerical measures. 23)
24) A histogram is an example of a numerical measure. 24)
25) Companies frequently use charts and graphs in their regular communications with stockholders 25)
and investors; this shows the use of descriptive statistics.
26) A manufacturing manager has developed a table that shows the average production volume 26)
each day for the past three weeks. The average production level is an example of a numerical
measure.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
27) Which of the following is an example of graphs used to describe data? 27)
A) Bar charts B) Histograms
C) Both A and B are correct. D) None of the above.
28) The Biltmore Hotel manager is getting ready to make a presentation that she hopes will justify 28)
adding additional staff. As part of the presentation, she has constructed charts and graphs. The
general type of statistical analysis she is using is:
A) estimation. B) inferential statistics.
C) hypothesis testing. D) descriptive statistics.
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
29) An accountant who recently examined 200 accounts from a company's total of 4,000 accounts in 29)
an effort to estimate the percentage of all accounts that have incorrect journal entries is using
descriptive statistical analysis to reach the conclusion.
30) Hypothesis testing and estimation are two statistical tools that are used to draw inferences about 30)
a large data set based on a subset of the data.
31) Statistical inference would be used as the primary statistical tool by a quality control manager 31)
who wishes to estimate the average weight of her company's products.
32) A light bulb manufacturer wants to advertise the average life of its light bulbs so it tests a subset 32)
of light bulbs. This is an example of inferential statistics.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
33) A car manufacturer stated in its advertising that the gas mileage for its hybrids will be greater 33)
than 40 mpg on average. A consumer agency tested a sampling of the hybrids under a variety of
conditions. Based on these tests, the agency concluded that the manufacturer was justified in
making this claim. The process described is an example of:
A) descriptive statistics. B) hypothesis testing.
C) statistical inference. D) Both B and C are correct.
34) Estimation and hypothesis testing are categories of: 34)
A) descriptive statistics. B) statistical charts.
C) inferential statistics. D) numerical measurement.
3
, TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
35) Some of the most common methods of collecting data include experiments, telephone surveys, 35)
mail questionnaires, direct observations, and personal interviews.
36) An experiment is a process that generates data as its outcome. 36)
37) Experimental design is a plan for performing an experiment where the effects of one or more 37)
factors on the variable of interest are measured.
38) Typically, it is possible to include a larger number of questions in a phone survey than in a mail 38)
survey since it takes less time to complete the survey over the phone.
39) An Internet-based or emailed survey is not an alternative method of data collection. 39)
40) An open-end question requires respondents to choose from a short list of choices 40)
41) A short survey with closed-end questions is likely to have a better response rate than a long 41)
survey with open-ended questions.
42) The Cranston Company recently met with a group of its customers to ask questions about the 42)
service and products provided by the company. The data collected in this process would be an
example of data collected through direct observation.
43) The Georgia Company, a pharmaceutical company, recently conducted a study in which 20 43)
people were given a new drug and 20 other people were given a placebo. The objective was to
determine whether there was a difference in pain relief between those using the new drug
versus those using the placebo. The data collection used here is an example of an experiment.
44) When comparing experiments, surveys, and direct observation as methods of data collection, the 44)
method that would typically be the least expensive is surveys.
45) On a survey, the questions pertaining to the background of the respondent (age, gender, etc.) are 45)
referred to as demographic questions.
46) When an interviewer asks a specified series of questions in the course of a personal interview, 46)
he/she is conducting an unstructured interview.
47) The marketing division of a company is interested in determining whether increased advertising 47)
will increase sales in three of its target cities. Three levels of advertising are used and the sales
are recorded for the month immediately following the ads. In this case, the data are considered
to have been collected using an experiment.
48) Questions on a written survey dealing with the characteristics of the respondent (age, income, 48)
etc.) are referred to as categorical questions.
49) Open-end questions are typically included in a survey when the objective is to provide the 49)
maximum opportunity for the respondent to express his or her opinion.
4
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