Essentials of statistics for business and economics, 10th edition – camm et al.
complete & solutions manual full chapters instant access 2025/2026
Chapter 1: Data and Statistics
1. A Wall Street Journal subscriber survey asked 46 questions about subscriber
characteristics and interests. The responses to the question "What is your age?"
represent:
A) Categorical data
B) Quantitative data
C) Both categorical and quantitative data
D) Neither categorical nor quantitative data
Answer: B) Quantitative data
Rationale: Age is a numerical value that can be measured and quantified.
Quantitative data are numerical measurements that can be used for arithmetic
operations such as calculating averages.
2. Tablet PC Comparison provides information about tablet computers including
cost, operating system, display size, battery life, and CPU manufacturer. Which of
these variables is categorical?
,A) Cost
B) Display size
C) Battery life
D) Operating system
Answer: D) Operating system
Rationale: Operating system (e.g., iOS, Android, Windows) represents categories
or groups rather than numerical measurements. Categorical variables place
individuals into groups or categories.
3. Which scale of measurement can be either numeric or non-numeric?
A) Ratio
B) Interval
C) Nominal
D) Ordinal
Answer: C) Nominal
,Rationale: Nominal data can take either numeric or non-numeric values where
numbers serve only as labels (e.g., 1=male, 2=female) without any quantitative
meaning.
4. Goals scored in a soccer game is an example of:
A) A categorical variable
B) A quantitative variable
C) Either a quantitative or categorical variable
D) Neither a quantitative nor categorical variable
Answer: B) A quantitative variable
Rationale: Goals scored are counts that can be added, averaged, and analyzed
numerically. Quantitative variables measure amounts or quantities.
5. In a questionnaire, respondents are asked to mark their marital status as single,
married, divorced, or widowed. Marital status is an example of a(n):
A) Categorical variable
B) Quantitative variable
C) Interval-scale variable
, D) Ordinal-scale variable
Answer: A) Categorical variable
Rationale: Marital status categories (single, married, divorced, widowed) are
labels without inherent numerical meaning, making this a categorical variable.
6. Data collected over several time periods are _____ data:
A) Time series
B) Time controlled
C) Cross-sectional
D) Periodic
Answer: A) Time series
Rationale: Time series data are collected over multiple time periods (e.g., monthly
sales figures over five years), allowing analysis of trends and patterns.
complete & solutions manual full chapters instant access 2025/2026
Chapter 1: Data and Statistics
1. A Wall Street Journal subscriber survey asked 46 questions about subscriber
characteristics and interests. The responses to the question "What is your age?"
represent:
A) Categorical data
B) Quantitative data
C) Both categorical and quantitative data
D) Neither categorical nor quantitative data
Answer: B) Quantitative data
Rationale: Age is a numerical value that can be measured and quantified.
Quantitative data are numerical measurements that can be used for arithmetic
operations such as calculating averages.
2. Tablet PC Comparison provides information about tablet computers including
cost, operating system, display size, battery life, and CPU manufacturer. Which of
these variables is categorical?
,A) Cost
B) Display size
C) Battery life
D) Operating system
Answer: D) Operating system
Rationale: Operating system (e.g., iOS, Android, Windows) represents categories
or groups rather than numerical measurements. Categorical variables place
individuals into groups or categories.
3. Which scale of measurement can be either numeric or non-numeric?
A) Ratio
B) Interval
C) Nominal
D) Ordinal
Answer: C) Nominal
,Rationale: Nominal data can take either numeric or non-numeric values where
numbers serve only as labels (e.g., 1=male, 2=female) without any quantitative
meaning.
4. Goals scored in a soccer game is an example of:
A) A categorical variable
B) A quantitative variable
C) Either a quantitative or categorical variable
D) Neither a quantitative nor categorical variable
Answer: B) A quantitative variable
Rationale: Goals scored are counts that can be added, averaged, and analyzed
numerically. Quantitative variables measure amounts or quantities.
5. In a questionnaire, respondents are asked to mark their marital status as single,
married, divorced, or widowed. Marital status is an example of a(n):
A) Categorical variable
B) Quantitative variable
C) Interval-scale variable
, D) Ordinal-scale variable
Answer: A) Categorical variable
Rationale: Marital status categories (single, married, divorced, widowed) are
labels without inherent numerical meaning, making this a categorical variable.
6. Data collected over several time periods are _____ data:
A) Time series
B) Time controlled
C) Cross-sectional
D) Periodic
Answer: A) Time series
Rationale: Time series data are collected over multiple time periods (e.g., monthly
sales figures over five years), allowing analysis of trends and patterns.
