STAT 200 WEEK 1 COMPREHENSIVE
ASSESSMENT QUESTIONS AND
ANSWERS
1. A researcher studies the relationship between the amount of time spent sleeping and
academic performance among all 5,000 students at a university. She collects data from 200
randomly selected students. In this scenario, the average GPA of the 200 students is a:
A. Sample Statistic
B. Population Parameter
C. Variable of Interest
D. Quantitative Constant
Answer: A
Conceptual Explanation: A sample statistic is a numerical characteristic of a sample,
whereas a population parameter is a numerical characteristic of the entire population.
2. A survey asks respondents to rate their satisfaction with a service as ‘Very Dissatisfied’,
‘Dissatisfied’, ‘Neutral’, ‘Satisfied’, or ‘Very Satisfied’. What level of measurement is this?
A. Nominal
,B. Interval
C. Ordinal
D. Ratio
Answer: C
Conceptual Explanation: Ordinal data can be ordered or ranked, but the differences
between the ranks are not mathematically precise or equal.
3. Which of the following describes a ‘Discrete’ quantitative variable?
A. The weight of a newborn baby.
B. The time it takes to run a marathon.
C. The distance between two cities.
D. The number of emails received in a day.
Answer: D
Conceptual Explanation: Discrete variables represent counts and can only take on
specific, isolated values (like integers), whereas continuous variables can take any value in
a range.
4. A quality control manager selects every 50th smartphone coming off an assembly line for
inspection. This is an example of which sampling method?
A. Stratified Sampling
B. Cluster Sampling
, C. Systematic Sampling
D. Simple Random Sampling
Answer: C
Conceptual Explanation: Systematic sampling involves selecting every kth element from a
list or sequence.
5. In a study regarding a new medication, neither the participants nor the researchers
measuring the outcome know who received the real drug and who received the sugar pill.
This design is called:
A. Double-blind
B. Single-blind
C. Completely randomized
D. Observational
Answer: A
Conceptual Explanation: A double-blind study prevents both subjects and investigators
from knowing the treatment assignments, reducing bias from both parties.
6. Which level of measurement allows for the most sophisticated statistical analysis because
it has a ‘true zero’ point?
A. Nominal
B. Ordinal
ASSESSMENT QUESTIONS AND
ANSWERS
1. A researcher studies the relationship between the amount of time spent sleeping and
academic performance among all 5,000 students at a university. She collects data from 200
randomly selected students. In this scenario, the average GPA of the 200 students is a:
A. Sample Statistic
B. Population Parameter
C. Variable of Interest
D. Quantitative Constant
Answer: A
Conceptual Explanation: A sample statistic is a numerical characteristic of a sample,
whereas a population parameter is a numerical characteristic of the entire population.
2. A survey asks respondents to rate their satisfaction with a service as ‘Very Dissatisfied’,
‘Dissatisfied’, ‘Neutral’, ‘Satisfied’, or ‘Very Satisfied’. What level of measurement is this?
A. Nominal
,B. Interval
C. Ordinal
D. Ratio
Answer: C
Conceptual Explanation: Ordinal data can be ordered or ranked, but the differences
between the ranks are not mathematically precise or equal.
3. Which of the following describes a ‘Discrete’ quantitative variable?
A. The weight of a newborn baby.
B. The time it takes to run a marathon.
C. The distance between two cities.
D. The number of emails received in a day.
Answer: D
Conceptual Explanation: Discrete variables represent counts and can only take on
specific, isolated values (like integers), whereas continuous variables can take any value in
a range.
4. A quality control manager selects every 50th smartphone coming off an assembly line for
inspection. This is an example of which sampling method?
A. Stratified Sampling
B. Cluster Sampling
, C. Systematic Sampling
D. Simple Random Sampling
Answer: C
Conceptual Explanation: Systematic sampling involves selecting every kth element from a
list or sequence.
5. In a study regarding a new medication, neither the participants nor the researchers
measuring the outcome know who received the real drug and who received the sugar pill.
This design is called:
A. Double-blind
B. Single-blind
C. Completely randomized
D. Observational
Answer: A
Conceptual Explanation: A double-blind study prevents both subjects and investigators
from knowing the treatment assignments, reducing bias from both parties.
6. Which level of measurement allows for the most sophisticated statistical analysis because
it has a ‘true zero’ point?
A. Nominal
B. Ordinal
