MATH 225N WEEK 1 - STATISTICAL
REASONING ASSESSMENT QUESTIONS
AND ANSWERS 100% VERIFIED
1. A researcher monitors the pulse rates of 50 patients before and after a specific exercise.
Which level of measurement is most appropriate for the pulse rate data?
A. Nominal
B. Ratio
C. Interval
D. Ordinal
Answer: B
Conceptual Explanation: Pulse rate has a natural zero point (no pulse) and the ratio of
two values is meaningful, making it ratio level data.
2. In a clinical trial, patients are assigned to two groups. One group receives the actual drug,
while the other receives a sugar pill. This is an example of:
A. An observational study
B. A census
C. A survey
D. A randomized experiment
,Answer: D
Conceptual Explanation: This is an experiment because a treatment (the drug) is applied
to one group to observe its effects compared to a control group.
3. A nursing supervisor selects every 10th nurse on the hospital roster to participate in a
survey. Which sampling method is being used?
A. Simple Random Sampling
B. Stratified Sampling
C. Systematic Sampling
D. Cluster Sampling
Answer: C
Conceptual Explanation: Systematic sampling involves selecting every kth member of the
population.
4. Data consisting of names, labels, or categories that cannot be ordered in a meaningful way
is known as:
A. Ordinal data
B. Discrete data
C. Nominal data
D. Continuous data
Answer: C
, Conceptual Explanation: Nominal data consists of categories that do not have a natural
rank or order.
5. A study concludes that 45% of all residents in a county have high blood pressure based on a
sample of 500 residents. The value ‘45%’ is a:
A. Statistic
B. Parameter
C. Variable
D. Constant
Answer: A
Conceptual Explanation: A statistic is a numerical measurement describing some
characteristic of a sample.
6. If a researcher wants to compare the heights of different groups of newborns, which level
of measurement is appropriate?
A. Nominal
B. Ordinal
C. Ratio
D. Interval
Answer: C
REASONING ASSESSMENT QUESTIONS
AND ANSWERS 100% VERIFIED
1. A researcher monitors the pulse rates of 50 patients before and after a specific exercise.
Which level of measurement is most appropriate for the pulse rate data?
A. Nominal
B. Ratio
C. Interval
D. Ordinal
Answer: B
Conceptual Explanation: Pulse rate has a natural zero point (no pulse) and the ratio of
two values is meaningful, making it ratio level data.
2. In a clinical trial, patients are assigned to two groups. One group receives the actual drug,
while the other receives a sugar pill. This is an example of:
A. An observational study
B. A census
C. A survey
D. A randomized experiment
,Answer: D
Conceptual Explanation: This is an experiment because a treatment (the drug) is applied
to one group to observe its effects compared to a control group.
3. A nursing supervisor selects every 10th nurse on the hospital roster to participate in a
survey. Which sampling method is being used?
A. Simple Random Sampling
B. Stratified Sampling
C. Systematic Sampling
D. Cluster Sampling
Answer: C
Conceptual Explanation: Systematic sampling involves selecting every kth member of the
population.
4. Data consisting of names, labels, or categories that cannot be ordered in a meaningful way
is known as:
A. Ordinal data
B. Discrete data
C. Nominal data
D. Continuous data
Answer: C
, Conceptual Explanation: Nominal data consists of categories that do not have a natural
rank or order.
5. A study concludes that 45% of all residents in a county have high blood pressure based on a
sample of 500 residents. The value ‘45%’ is a:
A. Statistic
B. Parameter
C. Variable
D. Constant
Answer: A
Conceptual Explanation: A statistic is a numerical measurement describing some
characteristic of a sample.
6. If a researcher wants to compare the heights of different groups of newborns, which level
of measurement is appropriate?
A. Nominal
B. Ordinal
C. Ratio
D. Interval
Answer: C
