CPHQ EXAM: HEALTH DATA ANALYTICS
QUESTIONS WITH CORRECT ANSWERS 2026
In evaluating "long waiting times," a healthcare quality professional best demonstrates components rel
ated to staffing, methods, measures, materials, and equipment utilizing
a. A run chart
b. A histogram
c. A pie chart
d. An Ishikawa diagram - CORRECT ANSWER -An Ishikawa (fishbone) diagram
(An Ishikawa diagram helps analyze potential causes. A histogram shows distribution. A pie chart comp
ares parts of a whole, and a run chart tracks data over time.)
The relationship between patient satisfaction and hours per patient day on a medical unit was found t
o be (r=0.60, p < 0.05). What is the correlation between these two values?
a. 0.05
b. 0.36
c. 0.55
d. 0.60 - CORRECT ANSWER -The correlation coefficient (r) is an index that ranges from -
1 to 1 and reflects the extent of a linear relationship between two data sets. The correlation coefficien
t is 0.60.
An emergency department tracks wait times from patient arrival to physician assessment. Data are rep
orted using a run chart. Which of the following demonstrates a true statistical increase in treatment de
lays?
a. 6 consecutive ascending data points
b. 7 consecutive descending data points
c. A zigzag pattern of 10 data points
d. Data points close to the mean line - CORRECT ANSWER -
A true statistical increase is indicated by 6 consecutive ascending data points (a)
Describe "Convenience Sampling". What method of sampling is it? - CORRECT ANSWER -Non-
probability sampling
, Subjects are selected because they are the "easiest" or most convenient for the researcher to access
Describe "Systematic Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
After random selection of the first subject, draw every nth subject from the population
Describe "Stratified Random Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
The population is divided into groups, and each member of the group has an equal probability of bein
g selected (ex: patients divided into groups based on age, gender, diagnosis, etc.)
Describe "Simple Random Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
Each person in the population has an equal chance of being selected (ex: put all names in a hat and dr
aw for a prize)
Define "Purposive Sampling". What method of sampling is it? - CORRECT ANSWER -
Nonprobability sampling
A particular group is subjectively selected based on criteria. Based on the researcher's judgement abou
t who is representative of the population.
Define "Expert Sampling". What method of sampling is it? - CORRECT ANSWER -
Nonprobability sampling
Experts in a given are are selected due to their access to information (ex: survey department managers
about staff satisfaction)
QUESTIONS WITH CORRECT ANSWERS 2026
In evaluating "long waiting times," a healthcare quality professional best demonstrates components rel
ated to staffing, methods, measures, materials, and equipment utilizing
a. A run chart
b. A histogram
c. A pie chart
d. An Ishikawa diagram - CORRECT ANSWER -An Ishikawa (fishbone) diagram
(An Ishikawa diagram helps analyze potential causes. A histogram shows distribution. A pie chart comp
ares parts of a whole, and a run chart tracks data over time.)
The relationship between patient satisfaction and hours per patient day on a medical unit was found t
o be (r=0.60, p < 0.05). What is the correlation between these two values?
a. 0.05
b. 0.36
c. 0.55
d. 0.60 - CORRECT ANSWER -The correlation coefficient (r) is an index that ranges from -
1 to 1 and reflects the extent of a linear relationship between two data sets. The correlation coefficien
t is 0.60.
An emergency department tracks wait times from patient arrival to physician assessment. Data are rep
orted using a run chart. Which of the following demonstrates a true statistical increase in treatment de
lays?
a. 6 consecutive ascending data points
b. 7 consecutive descending data points
c. A zigzag pattern of 10 data points
d. Data points close to the mean line - CORRECT ANSWER -
A true statistical increase is indicated by 6 consecutive ascending data points (a)
Describe "Convenience Sampling". What method of sampling is it? - CORRECT ANSWER -Non-
probability sampling
, Subjects are selected because they are the "easiest" or most convenient for the researcher to access
Describe "Systematic Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
After random selection of the first subject, draw every nth subject from the population
Describe "Stratified Random Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
The population is divided into groups, and each member of the group has an equal probability of bein
g selected (ex: patients divided into groups based on age, gender, diagnosis, etc.)
Describe "Simple Random Sampling". What method of sampling is it? - CORRECT ANSWER -
Probability sampling
Each person in the population has an equal chance of being selected (ex: put all names in a hat and dr
aw for a prize)
Define "Purposive Sampling". What method of sampling is it? - CORRECT ANSWER -
Nonprobability sampling
A particular group is subjectively selected based on criteria. Based on the researcher's judgement abou
t who is representative of the population.
Define "Expert Sampling". What method of sampling is it? - CORRECT ANSWER -
Nonprobability sampling
Experts in a given are are selected due to their access to information (ex: survey department managers
about staff satisfaction)
