WGU C784 APPLIED HEALTHCARE
STATISTICS OBJECTIVE ASSESSMENT #1
OA #1 STUDY GUIDE 2026 PRACTICE
QUESTIONS AND CORRECT ANSWERS
WITH DETAILED RATIONALES
COMPREHENSIVE EXAM PREPARATION
Causal Relationship - CORRECT ANSWER -A relationship between two
variables that can be classified as cause-and-effect.
Random Experiment - CORRECT ANSWER -Experiment in which the
outcome is not known ahead of time and in which results do not affect
future outcomes.
A patient's medication was increased by 40 milligrams. What is the percent
increase in the medication if the original medication was 180 milligrams?
A. 2.2%
B. 4.5%
C. 22.2%
D. 45% - CORRECT ANSWER -C. 22.2%
Factorization - CORRECT ANSWER -The process of determining the prime
factors of a composite number.
, Unit Multiplier - CORRECT ANSWER -A fraction that contains two
equivalent quantities but in two different units, used in order to convert
units.
Division Principle of Equality - CORRECT ANSWER -If both sides of the
equation are divided by the same non-zero number, the result is an
equivalent equation.
Symmetry - CORRECT ANSWER -The quality of the data having the same
shape on both sides of the mean.
Contingency Table - CORRECT ANSWER -A table that contains frequency
counts for two categorical variables. Also see Two-Way Frequency Table.
Correlation - CORRECT ANSWER -An observed relationship between two
quantitative variables. While this is most commonly a linear relationship, it
does not need to be. Not that observing a relationship does NOT imply that
there is a meaningful causal link between the variables.
Sample - CORRECT ANSWER -The small quantity of data gathered about a
population that will represent the population as a whole.
What is the Fahrenheit equivalent for a patient's room that needs to be kept
at 25 degrees Celsius?
A. 70°
B. 75°
C. 77°
STATISTICS OBJECTIVE ASSESSMENT #1
OA #1 STUDY GUIDE 2026 PRACTICE
QUESTIONS AND CORRECT ANSWERS
WITH DETAILED RATIONALES
COMPREHENSIVE EXAM PREPARATION
Causal Relationship - CORRECT ANSWER -A relationship between two
variables that can be classified as cause-and-effect.
Random Experiment - CORRECT ANSWER -Experiment in which the
outcome is not known ahead of time and in which results do not affect
future outcomes.
A patient's medication was increased by 40 milligrams. What is the percent
increase in the medication if the original medication was 180 milligrams?
A. 2.2%
B. 4.5%
C. 22.2%
D. 45% - CORRECT ANSWER -C. 22.2%
Factorization - CORRECT ANSWER -The process of determining the prime
factors of a composite number.
, Unit Multiplier - CORRECT ANSWER -A fraction that contains two
equivalent quantities but in two different units, used in order to convert
units.
Division Principle of Equality - CORRECT ANSWER -If both sides of the
equation are divided by the same non-zero number, the result is an
equivalent equation.
Symmetry - CORRECT ANSWER -The quality of the data having the same
shape on both sides of the mean.
Contingency Table - CORRECT ANSWER -A table that contains frequency
counts for two categorical variables. Also see Two-Way Frequency Table.
Correlation - CORRECT ANSWER -An observed relationship between two
quantitative variables. While this is most commonly a linear relationship, it
does not need to be. Not that observing a relationship does NOT imply that
there is a meaningful causal link between the variables.
Sample - CORRECT ANSWER -The small quantity of data gathered about a
population that will represent the population as a whole.
What is the Fahrenheit equivalent for a patient's room that needs to be kept
at 25 degrees Celsius?
A. 70°
B. 75°
C. 77°
