WGU C784 APPLIED HEALTHCARE
STATISTICS PREASSESSMENT EXAM
QUESTIONS AND ANSWERS
Question 1
Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when adding
together only the whole numbers?
A. 5.5
B. 11
C. 12.5
D. 15
Correct Answer
D. 15
Question 2
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%
Question 3
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°
D. 80°
Correct Answer
C. 77°
Page 1 of 140
,Question 4
Composite Number
Correct Answer
A number with more factors that just one and itself.
Question 5
Numerator
Correct Answer
The number that is written before the slash, or above the fraction bar, in a fraction.
Question 6
Trailing Zeros
Correct Answer
Sequence of zeros after the last non-zero digit in a decimal number.
Question 7
Observational Study
Correct Answer
The researcher observes if there is an association between variables. There is no
treatment or control group.
Question 8
Tree Diagram
Correct Answer
A diagram that records all the events in a sample space by attaching each new set
of events to each branch of the earlier events. The number of outermost branches
gives the sample size.
Page 2 of 140
,Question 9
Extrapolate
Correct Answer
Using information from a data set to make predictions about data outside of the
original set.
Question 10
Experiment
Correct Answer
A procedure that can be done repeatedly which has a well defined set of outcomes.
Question 11
An intravenous drip is infused at a rate of 4.5 milliliters per minute. How many
milliliters are infused per hour?
A. .075mL
B. 2.7mL
C. 75mL
D. 270mL
Correct Answer
D. 270mL
Question 12
Addition Principle of Equality
Correct Answer
The fact that we can add the same number to both sides of an equation, and the
result will be an equivalent equation.
Question 13
Slope-Intercept Form
Correct Answer
A common format that a linear equation can take that is helpful for graphing
purposes. It is of the form y = mx + b, where m is the slope of the line and b is the
y-intercept.
Page 3 of 140
, Question 14
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.
Question 15
Least Common Multiple (LCM)
Correct Answer
The smallest number in value that is a multiple of two or more numbers.
Question 16
Whole Number
Correct Answer
A number whose value is 0 or greater (negative number are not considered whole
numbers) and can be represented without a fractional or decimal component.
Question 17
Mean
Correct Answer
Average, calculated by adding a series of elements in a data set together and
dividing by the total number in the series.
Question 18
Regression Line
Correct Answer
The line of best fit to show the relationship between variables, the one that
minimizes distance from each data point to the line.
Page 4 of 140
STATISTICS PREASSESSMENT EXAM
QUESTIONS AND ANSWERS
Question 1
Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when adding
together only the whole numbers?
A. 5.5
B. 11
C. 12.5
D. 15
Correct Answer
D. 15
Question 2
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%
Question 3
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°
D. 80°
Correct Answer
C. 77°
Page 1 of 140
,Question 4
Composite Number
Correct Answer
A number with more factors that just one and itself.
Question 5
Numerator
Correct Answer
The number that is written before the slash, or above the fraction bar, in a fraction.
Question 6
Trailing Zeros
Correct Answer
Sequence of zeros after the last non-zero digit in a decimal number.
Question 7
Observational Study
Correct Answer
The researcher observes if there is an association between variables. There is no
treatment or control group.
Question 8
Tree Diagram
Correct Answer
A diagram that records all the events in a sample space by attaching each new set
of events to each branch of the earlier events. The number of outermost branches
gives the sample size.
Page 2 of 140
,Question 9
Extrapolate
Correct Answer
Using information from a data set to make predictions about data outside of the
original set.
Question 10
Experiment
Correct Answer
A procedure that can be done repeatedly which has a well defined set of outcomes.
Question 11
An intravenous drip is infused at a rate of 4.5 milliliters per minute. How many
milliliters are infused per hour?
A. .075mL
B. 2.7mL
C. 75mL
D. 270mL
Correct Answer
D. 270mL
Question 12
Addition Principle of Equality
Correct Answer
The fact that we can add the same number to both sides of an equation, and the
result will be an equivalent equation.
Question 13
Slope-Intercept Form
Correct Answer
A common format that a linear equation can take that is helpful for graphing
purposes. It is of the form y = mx + b, where m is the slope of the line and b is the
y-intercept.
Page 3 of 140
, Question 14
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.
Question 15
Least Common Multiple (LCM)
Correct Answer
The smallest number in value that is a multiple of two or more numbers.
Question 16
Whole Number
Correct Answer
A number whose value is 0 or greater (negative number are not considered whole
numbers) and can be represented without a fractional or decimal component.
Question 17
Mean
Correct Answer
Average, calculated by adding a series of elements in a data set together and
dividing by the total number in the series.
Question 18
Regression Line
Correct Answer
The line of best fit to show the relationship between variables, the one that
minimizes distance from each data point to the line.
Page 4 of 140
