STRAIGHTERLINE BUSINESS STATISTICS
FINAL EXAM QUESTIONS WITH ACCURATE
VERIFIED SOLUTIONS RATED A+
1. The main purpose of descriptive statistics is to:
A) Predict future outcomes
B) Summarize data in a useful and informative manner ✅
C) Conduct experiments
D) Test hypotheses
Explanation: Descriptive statistics organize and summarize data so that
patterns can be understood easily. It does not predict future events or test
hypotheses, which are functions of inferential statistics.
2. Which word is NOT part of the definition of descriptive
statistics?
A) Summarize
B) Informative
C) Predicting ✅
D) Data
Explanation: Descriptive statistics focuses on summarizing and describing
the main features of a data set. Prediction is part of inferential statistics, not
descriptive statistics.
3. A marketing class of 50 students evaluated the instructor
using the following scale: superior, good, average, poor, and
inferior. The descriptive summary showed 2% superior, 8%
good, 45% average, 45% poor, and 0% inferior. Which
statement is correct?
A) Most students rated the instructor as superior
B) Most students rated the instructor as poor or average ✅
C) Most students rated the instructor as good
D) Most students rated the instructor as inferior
,Explanation: By combining the percentages, 45% rated “average” and 45%
rated “poor,” totaling 90%. Therefore, most students rated the instructor
poorly or average.
4. What type of variable is the number of robberies reported
in a city?
A) Qualitative
B) Quantitative ✅
C) Nominal
D) Ordinal
Explanation: The number of robberies is a quantitative variable because it
represents measurable counts. It can be used in calculations such as
averages and standard deviations.
5. The Nielsen Ratings break down the number of people
watching a particular television show by age. What level of
measurement is age?
A) Nominal
B) Ordinal
C) Interval
D) Ratio ✅
Explanation: Age is a ratio-level variable because it has a true zero,
meaningful ratios, and consistent intervals between values.
6. What level of measurement is a person’s “favorite sport”?
A) Nominal ✅
B) Ordinal
C) Interval
D) Ratio
Explanation: Favorite sport is a categorical variable with no inherent
ranking, so it is measured at the nominal level.
7. The final rankings of the top 20 NCAA college basketball
teams are an example of which level of measurement?
,A) Nominal
B) Ordinal ✅
C) Interval
D) Ratio
Explanation: Rankings indicate order but not exact differences between
positions. Therefore, they are measured at the ordinal level.
8. What level of measurement is the Centigrade temperature
scale?
A) Nominal
B) Ordinal
C) Interval ✅
D) Ratio
Explanation: The Centigrade (Celsius) scale has consistent intervals
between values, but zero does not indicate the absence of temperature, so it
is interval-level measurement.
9. A survey includes a question regarding marital status:
single, married, divorced, separated, widowed. What is the
scale of measurement?
A) Ordinal
B) Interval
C) Nominal ✅
D) Ratio
Explanation: Marital status categories are distinct but have no inherent
order, making this a nominal variable.
10. A group of women tried five brands of fingernail polish
and ranked them according to preference. What level of
measurement is this?
A) Nominal
B) Ordinal ✅
C) Interval
D) Ratio
, Explanation: Ranking brands creates an order of preference but does not
quantify the difference between ranks, making it ordinal data.
11. Shoe style is an example of what level of measurement?
A) Nominal ✅
B) Ordinal
C) Interval
D) Ratio
Explanation: Shoe styles are categories without any natural ranking, so this
is nominal measurement.
12. When TV ads report “2 out of 3 dentists recommend
Brand X toothpaste,” why might this be questioned?
A) The sample is too small ✅
B) The advertisement is correct
C) The conclusion is generalizable
D) The question is irrelevant
Explanation: The statement lacks context such as the total number of
dentists surveyed, which could bias the results.
13. A sample of paramedical fees: $55, $49, $50, $45, $52,
$55. What is the median charge?
A) $50
B) $51 ✅
C) $52
D) $53
Explanation: Sorted data: 45, 49, 50, 52, 55, 55. Median = average of 50
and 52 = 51.
14. For a data set with an odd number of sorted
observations, the median is located at:
A) n/2
B) (n + 1)/2 ✅
FINAL EXAM QUESTIONS WITH ACCURATE
VERIFIED SOLUTIONS RATED A+
1. The main purpose of descriptive statistics is to:
A) Predict future outcomes
B) Summarize data in a useful and informative manner ✅
C) Conduct experiments
D) Test hypotheses
Explanation: Descriptive statistics organize and summarize data so that
patterns can be understood easily. It does not predict future events or test
hypotheses, which are functions of inferential statistics.
2. Which word is NOT part of the definition of descriptive
statistics?
A) Summarize
B) Informative
C) Predicting ✅
D) Data
Explanation: Descriptive statistics focuses on summarizing and describing
the main features of a data set. Prediction is part of inferential statistics, not
descriptive statistics.
3. A marketing class of 50 students evaluated the instructor
using the following scale: superior, good, average, poor, and
inferior. The descriptive summary showed 2% superior, 8%
good, 45% average, 45% poor, and 0% inferior. Which
statement is correct?
A) Most students rated the instructor as superior
B) Most students rated the instructor as poor or average ✅
C) Most students rated the instructor as good
D) Most students rated the instructor as inferior
,Explanation: By combining the percentages, 45% rated “average” and 45%
rated “poor,” totaling 90%. Therefore, most students rated the instructor
poorly or average.
4. What type of variable is the number of robberies reported
in a city?
A) Qualitative
B) Quantitative ✅
C) Nominal
D) Ordinal
Explanation: The number of robberies is a quantitative variable because it
represents measurable counts. It can be used in calculations such as
averages and standard deviations.
5. The Nielsen Ratings break down the number of people
watching a particular television show by age. What level of
measurement is age?
A) Nominal
B) Ordinal
C) Interval
D) Ratio ✅
Explanation: Age is a ratio-level variable because it has a true zero,
meaningful ratios, and consistent intervals between values.
6. What level of measurement is a person’s “favorite sport”?
A) Nominal ✅
B) Ordinal
C) Interval
D) Ratio
Explanation: Favorite sport is a categorical variable with no inherent
ranking, so it is measured at the nominal level.
7. The final rankings of the top 20 NCAA college basketball
teams are an example of which level of measurement?
,A) Nominal
B) Ordinal ✅
C) Interval
D) Ratio
Explanation: Rankings indicate order but not exact differences between
positions. Therefore, they are measured at the ordinal level.
8. What level of measurement is the Centigrade temperature
scale?
A) Nominal
B) Ordinal
C) Interval ✅
D) Ratio
Explanation: The Centigrade (Celsius) scale has consistent intervals
between values, but zero does not indicate the absence of temperature, so it
is interval-level measurement.
9. A survey includes a question regarding marital status:
single, married, divorced, separated, widowed. What is the
scale of measurement?
A) Ordinal
B) Interval
C) Nominal ✅
D) Ratio
Explanation: Marital status categories are distinct but have no inherent
order, making this a nominal variable.
10. A group of women tried five brands of fingernail polish
and ranked them according to preference. What level of
measurement is this?
A) Nominal
B) Ordinal ✅
C) Interval
D) Ratio
, Explanation: Ranking brands creates an order of preference but does not
quantify the difference between ranks, making it ordinal data.
11. Shoe style is an example of what level of measurement?
A) Nominal ✅
B) Ordinal
C) Interval
D) Ratio
Explanation: Shoe styles are categories without any natural ranking, so this
is nominal measurement.
12. When TV ads report “2 out of 3 dentists recommend
Brand X toothpaste,” why might this be questioned?
A) The sample is too small ✅
B) The advertisement is correct
C) The conclusion is generalizable
D) The question is irrelevant
Explanation: The statement lacks context such as the total number of
dentists surveyed, which could bias the results.
13. A sample of paramedical fees: $55, $49, $50, $45, $52,
$55. What is the median charge?
A) $50
B) $51 ✅
C) $52
D) $53
Explanation: Sorted data: 45, 49, 50, 52, 55, 55. Median = average of 50
and 52 = 51.
14. For a data set with an odd number of sorted
observations, the median is located at:
A) n/2
B) (n + 1)/2 ✅
