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,TT
Business Statistics, Cdn. Ed., 4e (Sharpe)
Chapter 2: Data
Short Answer - Quiz A
1) The mission of a research firm is to "explore the impact of the Internet on families,
communities, work, home, and daily life." In August - September 2015 they conducted telephone
interviews with a sample of Canadian adults aged 18 and older about online shopping. Describe
the W's for the information given.
• Who:
• What:
• When:
• Where:
• How:
• Why:
Answer:
• Who: Canadian adults aged 18 and older
• What: online shopping
• When: August - September 2015
• Where: Canada
• How: telephone interviews
• Why: to explore the impact of the Internet on daily life, specifically online shopping
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,2) The following table displays some of the data collected by the above research firm in their
study of online shopping. List the variables in the data set. Indicate whether each variable is
categorical or quantitative. If the variable is quantitative, give the units.
Participated Monthly Time (hours) per
Household in online amount spent week browsing
Age Gender Income auction? online online retailers
25 Male $55,000 Yes $250 6
47 Female $60,000 No $50 4
38 Female $110,000 No $120 10
30 Male $62,000 No $75 4
Answer: Categorical: Gender, Participated in online auction?
Quantitative: Age (years), Household Income ($), Monthly amount spent online ($), Time per
week browsing online retailers (hours).
L.O.: 2
3) In addition to the variables listed above, data were also collected on the variables listed below.
Indicate whether each is nominal or ordinal.
• Region (Urban, Suburban, Rural)
• Education (Less than High School, High School, College, University)
• Marital Status (Single, Widowed, Divorced, Married)
Answer:
• Region (Urban, Suburban, Rural)
Nominal
• Education (Less than High School, High School, College, University)
Ordinal
• Marital Status (Single, Widowed, Divorced, Married)
Nominal
L.O.: 2
4) For each of the following, indicate whether the data are cross-sectional or time series:
• Weekly receipts at a clothing boutique
• Monthly demand for an automotive part
• Percentage of adults who bank online
Answer:
• Weekly receipts at a clothing boutique
Time Series
• Monthly demand for an automotive part
Time Series
• Percentage of adults who bank online
Cross-Sectional
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, 5) Eastland College instructors and students are asking to review a new computer tutorial. Peter,
author of the tutorial, wants to analyze the feedback. He gets a spreadsheet. List the variables in
the data set. Indicate whether each variable is categorical or quantitative. If the variable is
categorical, indicate whether it is nominal or ordinal. Does the table contain an identifier
variable?
Number of
Tutorial Level of visits Time (minutes)
Name Status Access ID satisfaction per week spent per week
Ann Instructor AB235 Moderately helpful 3 60
Boris Student BC1090 Very helpful 4 120
Parul Student PR1841 Not helpful 1 30
Paul Instructor PG145 Somewhat helpful 2 45
Answer: Quantitative: Number of visits per week, Time spent per week (minutes)
Categorical: Name (nominal), Status (nominal), Tutorial Access ID (nominal, identifier), Level
of satisfaction (ordinal).
L.O.: 2
Short Answer - Quiz B
1) Consumer Reports Health routinely compares drugs in terms of effectiveness and safety.
Suppose that in the summer of 2014 they reviewed drugs used to treat arthritis. Information was
reported on convenience of use (how many pills required each day), possible side effects (e.g.,
dizziness, stomach upset), cost, and ratings of effectiveness in relieving symptoms (very
effective, somewhat effective, not effective). Describe the W's for the information given.
• Who:
• What:
• When:
• Where:
• How:
• Why:
Answer:
• Who: drugs to treat arthritis currently on the market
• What: convenience of use, side effects, cost, effectiveness ratings
• When: summer 2014
• Where: not specified
• How: testing on drugs
• Why: to compare arthritis drugs it terms of effectiveness and safety
L.O.: 1
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