Question 1

In an application for a credit card, potential customers are asked for their social security numbers.A social security number is an example of a _____.

Accepted Answer

A)   categorical variable
B)   quantitative variable
C)   categorical or quantitative variable, depending on how the respondents answered the question
D)   ratio variableE) C) and D)
F) All of the above

Question 2

Which of the following is an example of categorical data?

Accepted Answer

A)   social security number
B)   score on a multiple-choice exam
C)   height, in meters, of a diving board
D)   number of square feet of carpetE) B) and C)
F) All of the above

Question 3

When the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?

Accepted Answer

A)   nominal
B)   ordinal
C)   interval
D)   ratioE) A) and D)
F) B) and C)

Question 4

Exhibit 1-1
In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes.
-Refer to Exhibit 1-1.The Daisy City study is an example of the use of a _____.

Accepted Answer

A)   census
B)   sample
C)   probability
D)   populationE) C) and D)
F) B) and D)

Question 5

_____ analytics encompasses the set of analytical techniques that describe what has happened in the past.

Accepted Answer

A)   Descriptive
B)   Predictive
C)   Prescriptive
D)   DataE) A) and B)
F) A) and C)

Question 6

The term _____ is used to refer to the process of capturing, storing, and maintaining data.

Accepted Answer

A)   data warehousing
B)   data mining
C)   data analysis
D)   data collectionE) A) and D)
F) A) and C)

Question 7

The Department of Transportation of a city has noted that on the average there are 14 accidents per day.The average number of accidents is an example of _____.

Accepted Answer

A)   descriptive statistics
B)   statistical inference
C)   a sample
D)   a populationE) A) and D)
F) C) and D)

Question 8

_____ analytics is the set of analytical techniques that yield a course of action.

Accepted Answer

A)   Descriptive
B)   Predictive
C)   Prescriptive
D)   DataE) All of the above
F) B) and D)

Question 9

The owner of a factory regularly requests a graphical summary of all employees' salaries.The graphical summary of salaries is an example of _____.

Accepted Answer

A)   a sample
B)   descriptive statistics
C)   statistical inference
D)   an experimentE) B) and C)
F) A) and C)

Question 10

Which of the following is NOT an example of descriptive statistics?

Accepted Answer

A)   a histogram depicting the age distribution for 30 randomly selected students
B)   an estimate of the number of Alaska residents who have visited Canada
C)   a table summarizing the data collected in a sample of new-car buyers
D)   the proportion of mailed-out questionnaires that were returnedE) B) and C)
F) A) and B)

Question 11

The major applications of data mining have been made by companies with a strong _____ focus.

Accepted Answer

A)   consumer
B)   manufacturing
C)   exporting
D)   research and developmentE) A) and B)
F) A) and C)

Question 12

In a post office, the mailboxes are numbered from 1 to 5,000.These numbers represent _____.

Accepted Answer

A)   categorical data
B)   time series data
C)   cross-sectional data
D)   quantitative dataE) A) and B)
F) All of the above

Question 13

The collection of all elements of interest in a study is _____.

Accepted Answer

A)   the population
B)   the sampling
C)   statistical inference
D)   descriptive statisticsE) None of the above
F) C) and D)

Question 14

Income is an example of _____.

Accepted Answer

A)   categorical data
B)   either categorical or quantitative data
C)   currency data
D)   quantitative dataE) All of the above
F) A) and D)

Question 15

A portion of the population selected to represent the population is called _____.

Accepted Answer

A)   statistical inference
B)   descriptive statistics
C)   a census
D)   a sampleE) None of the above
F) All of the above

Question 16

A Scanner Data User Survey of 50 companies found that the average amount spent on scanner data per category of consumer goods was $387,325 (Mercer Management Consulting, Inc., April 24, 1997) .The $387,325 is an example of _____.

Accepted Answer

A)   categorical data
B)   quantitative data
C)   a descriptive statistic
D)   Both quantitative data and a descriptive statistic are correct.E) A) and B)
F) B) and C)

Question 17

Statistical studies in which researchers control variables of interest are _____ studies.

Accepted Answer

A)   experimental
B)   control observational
C)   non-experimental
D)   observationalE) A) and B)
F) All of the above

Question 18

Statistical studies in which researchers do not control variables of interest are _____.

Accepted Answer

A)   experimental studies
B)   uncontrolled experimental studies
C)   not of any value
D)   observational studiesE) A) and B)
F) B) and C)

Question 19

Data collected over several time periods are _____ data.

Accepted Answer

A)   time series
B)   time-controlled
C)   cross-sectional
D)   time dependentE) B) and C)
F) All of the above

Question 20

When the data are labels or names used to identify an attribute of the elements, the variable has which scale of measurement?

Accepted Answer

A)   nominal
B)   ordinal
C)   interval
D)   ratioE) A) and B)
F) C) and D)

Exam 1: Data and Statistics

In a post office, the mailboxes are numbered from 1 to 5,000.These numbers represent _____.

Correct AnswerverifiedShow Answer

The major applications of data mining have been made by companies with a strong _____ focus.

Correct AnswerverifiedShow Answer

_____ analytics encompasses the set of analytical techniques that describe what has happened in the past.

Correct AnswerverifiedShow Answer

Exhibit 1-1 In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes. -Refer to Exhibit 1-1.The Daisy City study is an example of the use of a _____.

Correct AnswerverifiedShow Answer

The term _____ is used to refer to the process of capturing, storing, and maintaining data.

Correct AnswerverifiedShow Answer

The Department of Transportation of a city has noted that on the average there are 14 accidents per day.The average number of accidents is an example of _____.

Correct AnswerverifiedShow Answer

A Scanner Data User Survey of 50 companies found that the average amount spent on scanner data per category of consumer goods was $387,325 (Mercer Management Consulting, Inc., April 24, 1997) .The $387,325 is an example of _____.

Correct AnswerverifiedShow Answer

Statistical studies in which researchers control variables of interest are _____ studies.

Correct AnswerverifiedShow Answer

Statistical studies in which researchers do not control variables of interest are _____.

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Which of the following is an example of categorical data?

Correct AnswerverifiedShow Answer

Income is an example of _____.

Correct AnswerverifiedShow Answer

When the data are labels or names used to identify an attribute of the elements, the variable has which scale of measurement?

Correct AnswerverifiedShow Answer

_____ analytics is the set of analytical techniques that yield a course of action.

Correct AnswerverifiedShow Answer

The collection of all elements of interest in a study is _____.

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of descriptive statistics?

Correct AnswerverifiedShow Answer

In an application for a credit card, potential customers are asked for their social security numbers.A social security number is an example of a _____.

Correct AnswerverifiedShow Answer

A portion of the population selected to represent the population is called _____.

Correct AnswerverifiedShow Answer

The owner of a factory regularly requests a graphical summary of all employees' salaries.The graphical summary of salaries is an example of _____.

Correct AnswerverifiedShow Answer

When the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?

Correct AnswerverifiedShow Answer

Data collected over several time periods are _____ data.

Correct AnswerverifiedShow Answer

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