WGU C784 APPLIED HEALTHCARE
STATISTICS FINAL EXAM 2027
1. A researcher measures the body temperature of 100 patients in Celsius. Which scale of
measurement is being used?
A. Nominal
B. Interval
C. Ordinal
D. Ratio
Answer: B
Conceptual Explanation: Celsius temperature is an interval scale because it has equal
intervals between units but lacks a true zero point (0°C does not mean an absence of heat).
2. In a study comparing the effectiveness of three different blood pressure medications,
which statistical test is most appropriate?
A. Independent Samples t-test
B. Pearson Correlation
C. Chi-Square Test of Independence
,D. One-Way ANOVA
Answer: D
Conceptual Explanation: One-Way ANOVA is used to compare the means of three or more
independent groups.
3. Which of the following best describes a Type I error?
A. Failing to reject a false null hypothesis
B. Accepting a false alternative hypothesis
C. Rejecting a true alternative hypothesis
D. Rejecting a true null hypothesis
Answer: D
Conceptual Explanation: A Type I error occurs when the researcher rejects the null
hypothesis when it is actually true (a false positive).
4. A dataset of patient recovery times is highly skewed to the right. Which measure of central
tendency is most appropriate to describe the typical recovery time?
A. Mean
B. Mode
C. Median
D. Standard Deviation
, Answer: C
Conceptual Explanation: The median is more robust than the mean when dealing with
skewed distributions or outliers.
5. What is the probability of rolling a 4 or a 5 on a standard six-sided die?
A. 1/3
B. 1/6
C. 1/2
D. 2/3
Answer: A
Conceptual Explanation: The events are mutually exclusive. P(4 or 5) = P(4) + P(5) = 1/6
+ 1/6 = 2/6 = 1/3.
6. In a normal distribution, approximately what percentage of data points fall within two
standard deviations of the mean?
A. 68%
B. 90%
C. 99.7%
D. 95%
Answer: D
STATISTICS FINAL EXAM 2027
1. A researcher measures the body temperature of 100 patients in Celsius. Which scale of
measurement is being used?
A. Nominal
B. Interval
C. Ordinal
D. Ratio
Answer: B
Conceptual Explanation: Celsius temperature is an interval scale because it has equal
intervals between units but lacks a true zero point (0°C does not mean an absence of heat).
2. In a study comparing the effectiveness of three different blood pressure medications,
which statistical test is most appropriate?
A. Independent Samples t-test
B. Pearson Correlation
C. Chi-Square Test of Independence
,D. One-Way ANOVA
Answer: D
Conceptual Explanation: One-Way ANOVA is used to compare the means of three or more
independent groups.
3. Which of the following best describes a Type I error?
A. Failing to reject a false null hypothesis
B. Accepting a false alternative hypothesis
C. Rejecting a true alternative hypothesis
D. Rejecting a true null hypothesis
Answer: D
Conceptual Explanation: A Type I error occurs when the researcher rejects the null
hypothesis when it is actually true (a false positive).
4. A dataset of patient recovery times is highly skewed to the right. Which measure of central
tendency is most appropriate to describe the typical recovery time?
A. Mean
B. Mode
C. Median
D. Standard Deviation
, Answer: C
Conceptual Explanation: The median is more robust than the mean when dealing with
skewed distributions or outliers.
5. What is the probability of rolling a 4 or a 5 on a standard six-sided die?
A. 1/3
B. 1/6
C. 1/2
D. 2/3
Answer: A
Conceptual Explanation: The events are mutually exclusive. P(4 or 5) = P(4) + P(5) = 1/6
+ 1/6 = 2/6 = 1/3.
6. In a normal distribution, approximately what percentage of data points fall within two
standard deviations of the mean?
A. 68%
B. 90%
C. 99.7%
D. 95%
Answer: D
