C784-Applied Healthcare Statistics
Exam Questions and Complete
Solutions Graded A+
Question 1: Given the following set of numbers: 3.3, -2.3, -16, 25. What are
the square roots of the whole number?
o A. +/- 2.3
o B. +/- 3.3
o C. +/- 4
o D. +/- 5
o Answer: D. +/- 5
Question 2: What is a composite number?
o Answer: A number with more factors that just one and itself.
Question 3: What are equivalent fractions?
o Answer: Different fractions that represent the same value.
Question 4: What is the X-Axis?
o Answer: The horizontal line that passes through the origin on a coordinate
plane.
Question 5: What is qualitative data?
o Answer: Non-numeric information based on some quality or characteristic.
Question 6: What does it mean if a correlation coefficient is 0?
o Answer: There is no apparent linear trend between the two variables.
(Note: a non-linear trend could still exist).
Question 7: What does it mean to extrapolate?
o Answer: Using information from a data set to make predictions about data
outside of the original set.
, Question 8: Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is
the sum when adding together only the whole numbers?
o A. 5.5
o B. 11
o C. 12.5
o D. 15
o Answer: D. 15
Question 9: In mathematics, what is an operation?
o Answer: A procedure which generates a new value from one or more
operands, or mathematical values.
Question 10: What is a conditional proportion?
o Answer: A proportion where one part of the proportion is a variable, or
unknown quantity.
Descriptive Statistics
Question 11: A hospital recorded the number of patients seen in the ER
over 5 days: 20, 25, 30, 35, 90. What is the mean?
o Answer: 40.
Question 12: For the same data set (20, 25, 30, 35, 90), what is the median?
o Answer: 30.
Question 13: Which measure (mean or median) better represents the data,
and why?
o Answer: The median better represents the data because the value 90 is an
outlier that skews the mean.
Question 14: Two clinics report average patient wait times of 30 minutes.
Clinic A has a small standard deviation, while Clinic B has a large one. Which
clinic has more consistent wait times?
o Answer: Clinic A has more consistent wait times because a smaller standard
deviation indicates less variability.
Question 15: Patient ages in a study: 25, 30, 35, 40, 60. What is the range?
o Answer: 35.
Exam Questions and Complete
Solutions Graded A+
Question 1: Given the following set of numbers: 3.3, -2.3, -16, 25. What are
the square roots of the whole number?
o A. +/- 2.3
o B. +/- 3.3
o C. +/- 4
o D. +/- 5
o Answer: D. +/- 5
Question 2: What is a composite number?
o Answer: A number with more factors that just one and itself.
Question 3: What are equivalent fractions?
o Answer: Different fractions that represent the same value.
Question 4: What is the X-Axis?
o Answer: The horizontal line that passes through the origin on a coordinate
plane.
Question 5: What is qualitative data?
o Answer: Non-numeric information based on some quality or characteristic.
Question 6: What does it mean if a correlation coefficient is 0?
o Answer: There is no apparent linear trend between the two variables.
(Note: a non-linear trend could still exist).
Question 7: What does it mean to extrapolate?
o Answer: Using information from a data set to make predictions about data
outside of the original set.
, Question 8: Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is
the sum when adding together only the whole numbers?
o A. 5.5
o B. 11
o C. 12.5
o D. 15
o Answer: D. 15
Question 9: In mathematics, what is an operation?
o Answer: A procedure which generates a new value from one or more
operands, or mathematical values.
Question 10: What is a conditional proportion?
o Answer: A proportion where one part of the proportion is a variable, or
unknown quantity.
Descriptive Statistics
Question 11: A hospital recorded the number of patients seen in the ER
over 5 days: 20, 25, 30, 35, 90. What is the mean?
o Answer: 40.
Question 12: For the same data set (20, 25, 30, 35, 90), what is the median?
o Answer: 30.
Question 13: Which measure (mean or median) better represents the data,
and why?
o Answer: The median better represents the data because the value 90 is an
outlier that skews the mean.
Question 14: Two clinics report average patient wait times of 30 minutes.
Clinic A has a small standard deviation, while Clinic B has a large one. Which
clinic has more consistent wait times?
o Answer: Clinic A has more consistent wait times because a smaller standard
deviation indicates less variability.
Question 15: Patient ages in a study: 25, 30, 35, 40, 60. What is the range?
o Answer: 35.
