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CHAPTER 1—DATA AND STATISTICSMULTIPLE CHOICE
1. Which of the following is an example of quantitative data?
a. the player’s number on a baseball uniform
b. the serial number on a one-dollar bill
c. the part number of an inventory item
d. the number of people in a waiting line
ANSWER: d
2. Which of the following is NOT an example of descriptive statistics?
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 returned
ANSWER: b
3. Which of the following is an example of categorical data?
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 carpet
ANSWER: a
4. The number of observations in a complete data set having 10 elements and 5 variables is _____.
a. 5
b. 10
c. 25
d. 50
ANSWER: b
5. Facts and figures collected, analyzed, and summarized for presentation and interpretation are called
_____.
a. data
b. variables
c. elements
d. variables and
elements
ANSWER: a
,6. The entities on which data are collected are _____.
a. elements
b. populations
c. sets
d. samples
ANSWER: a
7. The set of measurements collected for an element is called a(n) _____.
a. census
b. variable
c. observation
d. sample
ANSWER: c
8. A characteristic of interest for the elements is called a(n) _____.
a. sample
b. data set
c. variable
d. observation
ANSWER: c
9. All data collected in a study are referred to as the _____.
a. census
b. inference
c. variable
d. data set
ANSWER: d
10. In a data set, the number of observations will always be the same as the number of _____.
a. variables
b. elements
c. data sets
d. data
ANSWER: b
11. Which of the following is NOT a scale of measurement?
a. nominal
b. ordinal
c. interval
d. categorica
l
,ANSWER: d
12. When the data are labels or names used to identify an attribute of the elements, the variable has which
scale of measurement?
a. nominal
b. ordinal
c. interval
d. ratio
ANSWER: a
13. 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?
a. nominal
b. ordinal
c. interval
d. ratio
ANSWER: b
14. When the data have the properties of ordinal data and the interval between observations is expressed
in terms of a fixed unit of measure, the variable has which scale of measurement?
a. nominal
b. ordinal
c. interval
d. ratio
ANSWER: c
15. When the data have the properties of interval data and the multiplication or division of two values is
meaningful, the variable has which scale of measurement?
a. nominal
b. ordinal
c. interval
d. ratio
ANSWER: d
16. Which two scales of measurement can be either numeric or nonnumeric?
a. nominal and ratio
b. ordinal and interval
c. interval and ordinal
d. nominal and
ordinal
ANSWER: d
, 17. Which of the following variables uses the interval scale of measurement?
a. name of stock exchange
b. time
c. SAT scores
d. social security number
ANSWER: c
18. Which of the following variables uses the ratio scale of measurement?
a. name of stock exchange
b. time
c. SAT scores
d. social security number
ANSWER: b
19. Quantitative data _____.
a. are always nonnumeric
b. may be either numeric or nonnumeric
c. are always numeric
d. are always labels
ANSWER: c
20. Categorical data _____.
a. are always nonnumeric
b. may be either numeric or nonnumeric
c. are always numeric
d. indicate either how much or how
many
ANSWER: b
21. _____ analytics is the set of analytical techniques that yield a course of action.
a. Descriptive
b. Predictive
c. Prescriptiv
e
d. Data
ANSWER: c
22. What organization developed the report, “Ethical Guidelines for Statistical Practice”?
a. Ethics Committee for Statistical Practices
b. American Statistical Association
c. International Statistical Organization
d. Federal Bureau for Ethical Practices in Statistics
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