WGU C784 Applied Healthcare Statistics Preassessment –
Most Teste Questions & Answers | Descriptive Stats,
Probability, Hypothesis Testing & Healthcare Scenarios|
Instant Pdf Download
Q1–Q15: Data types, descriptive statistics, and basic probability
Q1
A hospital records patients’ blood types (A, B, AB, O) in its database. What level of
measurement is this?
A. Ratio
B. Interval
C. Nominal*
D. Ordinal
Rationale: Blood type is a named category with no order; this is nominal data.
Q2
A researcher ranks hospital units from “1 = best performing” to “5 = worst
performing” based on infection rates. What level of measurement is this?
A. Ratio
B. Interval
,C. Nominal
D. Ordinal*
Rationale: The data have an order, but differences between ranks are not equal,
so it is ordinal.
Q3
A nurse records a patient’s temperature in degrees Celsius. What level of
measurement is this?
A. Nominal
B. Ordinal
C. Interval*
D. Ratio
Rationale: Celsius has equal intervals but no true zero; it is interval data.
Q4
A dietitian records daily calorie intake (kcal) for a group of patients. What level of
measurement is this?
A. Nominal
B. Ordinal
C. Interval
D. Ratio*
,Rationale: Calories have a meaningful zero and equal intervals, so they are ratio
data.
Q5
Which measure of central tendency is most affected by extreme high or low
values?
A. Mode
B. Mean*
C. Median
D. Range
Rationale: The mean uses all data values, so outliers can pull it up or down.
Q6
In a right-skewed distribution of hospital length of stay, which measure of central
tendency is usually largest?
A. Median
B. Mean*
C. Mode
D. Interquartile range
Rationale: In a right-skewed distribution, a few large values pull the mean to the
right, making it larger than the median.
, Q7
A study reports the median number of days patients spend in the ICU. What does
this median represent?
A. The most frequent value
B. The middle value when all are ordered*
C. The average of all values
D. The largest value
Rationale: The median is the middle value when data are ranked from lowest to
highest.
Q8
A healthcare analyst calculates the mode for number of daily emergency
department visits. What does the mode represent?
A. The middle value
B. The most frequently occurring value*
C. The average of all values
D. The smallest value
Rationale: The mode is the value that occurs most often in the dataset.
Q9
A physician wants to summarize patients’ systolic blood pressure values using a
single number. Which measure is commonly used?
Most Teste Questions & Answers | Descriptive Stats,
Probability, Hypothesis Testing & Healthcare Scenarios|
Instant Pdf Download
Q1–Q15: Data types, descriptive statistics, and basic probability
Q1
A hospital records patients’ blood types (A, B, AB, O) in its database. What level of
measurement is this?
A. Ratio
B. Interval
C. Nominal*
D. Ordinal
Rationale: Blood type is a named category with no order; this is nominal data.
Q2
A researcher ranks hospital units from “1 = best performing” to “5 = worst
performing” based on infection rates. What level of measurement is this?
A. Ratio
B. Interval
,C. Nominal
D. Ordinal*
Rationale: The data have an order, but differences between ranks are not equal,
so it is ordinal.
Q3
A nurse records a patient’s temperature in degrees Celsius. What level of
measurement is this?
A. Nominal
B. Ordinal
C. Interval*
D. Ratio
Rationale: Celsius has equal intervals but no true zero; it is interval data.
Q4
A dietitian records daily calorie intake (kcal) for a group of patients. What level of
measurement is this?
A. Nominal
B. Ordinal
C. Interval
D. Ratio*
,Rationale: Calories have a meaningful zero and equal intervals, so they are ratio
data.
Q5
Which measure of central tendency is most affected by extreme high or low
values?
A. Mode
B. Mean*
C. Median
D. Range
Rationale: The mean uses all data values, so outliers can pull it up or down.
Q6
In a right-skewed distribution of hospital length of stay, which measure of central
tendency is usually largest?
A. Median
B. Mean*
C. Mode
D. Interquartile range
Rationale: In a right-skewed distribution, a few large values pull the mean to the
right, making it larger than the median.
, Q7
A study reports the median number of days patients spend in the ICU. What does
this median represent?
A. The most frequent value
B. The middle value when all are ordered*
C. The average of all values
D. The largest value
Rationale: The median is the middle value when data are ranked from lowest to
highest.
Q8
A healthcare analyst calculates the mode for number of daily emergency
department visits. What does the mode represent?
A. The middle value
B. The most frequently occurring value*
C. The average of all values
D. The smallest value
Rationale: The mode is the value that occurs most often in the dataset.
Q9
A physician wants to summarize patients’ systolic blood pressure values using a
single number. Which measure is commonly used?
