WGU C784 - APPLIED HEALTHCARE
STATISTICS
Objective Assessment 1 | 150 Questions with Verified Answers
Vocabulary, Formulas & Concepts | 2026/2027 Update | Graded A+
SECTION 1: MEASUREMENT & DATA TYPES
Questions 1–20
Question 1
What is the term for a characteristic or attribute that can be measured and can vary across
subjects?
A) Constant
B) Variable
C) Data point
D) Parameter
Correct answer: B
Rationale: A variable is a characteristic or attribute that can be measured and can take on
different values across different subjects or observations. Examples include height, blood
pressure, age, or cholesterol level .
Question 2
Which type of variable represents categories with no inherent order or ranking?
A) Ordinal variable
B) Ratio variable
C) Interval variable
D) Nominal variable
Correct answer: D
,Rationale: Nominal variables represent categories with no natural order or ranking. Examples
include gender (male/female), blood type (A/B/AB/O), or political affiliation .
Question 3
Which type of variable has categories that can be ordered or ranked but have unequal intervals
between categories?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: B
Rationale: Ordinal variables have ordered categories with unequal intervals. Examples include
pain scales (mild/moderate/severe) or education levels (high school, bachelor's, master's,
doctorate) where the difference between categories is not mathematically defined .
Question 4
Which type of variable has ordered categories with equal intervals between values but no true
zero?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: C
Rationale: Interval variables have ordered categories with equal intervals between values but
lack a true zero point. Temperature in Celsius or Fahrenheit is a classic example: 0° does not
mean no temperature .
Question 5
,Which type of variable has ordered categories with equal intervals between values and a true
zero point?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: D
Rationale: Ratio variables have a true zero point, allowing meaningful ratios (e.g., 20 kg is twice
as heavy as 10 kg). Examples include height, weight, age, and blood pressure .
Question 6
What is the term for a variable that is manipulated by the researcher to observe its effect?
A) Dependent variable
B) Independent variable
C) Confounding variable
D) Constant variable
Correct answer: B
Rationale: The independent variable is the one manipulated by the researcher to determine if it
causes changes in the dependent variable. It is often called the "predictor" or "explanatory"
variable .
Question 7
What is the term for the outcome variable that is measured to assess the effect of the
independent variable?
A) Dependent variable
B) Independent variable
C) Extraneous variable
D) Control variable
Correct answer: A
, Rationale: The dependent variable is the outcome that is measured to see if it changes as a
result of manipulating the independent variable. It is often called the "response" or "outcome"
variable .
Question 8
Which type of data consists of numbers representing counts or measurements?
A) Qualitative data
B) Categorical data
C) Quantitative data
D) Ordinal data
Correct answer: C
Rationale: Quantitative data consists of numerical values representing counts or measurements.
This data can be further classified as discrete (countable) or continuous (measurable).
Examples include heart rate, blood glucose, and number of hospital visits .
Question 9
Which type of data consists of labels or names used to identify categories?
A) Quantitative data
B) Numerical data
C) Qualitative data (categorical)
D) Continuous data
Correct answer: C
Rationale: Qualitative data (categorical) consists of non-numerical labels or names used to
classify items into categories. Examples include hair color, ethnicity, and disease type. This data
can be nominal or ordinal .
Question 10
What type of quantitative data can only take specific values (usually whole numbers)?
STATISTICS
Objective Assessment 1 | 150 Questions with Verified Answers
Vocabulary, Formulas & Concepts | 2026/2027 Update | Graded A+
SECTION 1: MEASUREMENT & DATA TYPES
Questions 1–20
Question 1
What is the term for a characteristic or attribute that can be measured and can vary across
subjects?
A) Constant
B) Variable
C) Data point
D) Parameter
Correct answer: B
Rationale: A variable is a characteristic or attribute that can be measured and can take on
different values across different subjects or observations. Examples include height, blood
pressure, age, or cholesterol level .
Question 2
Which type of variable represents categories with no inherent order or ranking?
A) Ordinal variable
B) Ratio variable
C) Interval variable
D) Nominal variable
Correct answer: D
,Rationale: Nominal variables represent categories with no natural order or ranking. Examples
include gender (male/female), blood type (A/B/AB/O), or political affiliation .
Question 3
Which type of variable has categories that can be ordered or ranked but have unequal intervals
between categories?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: B
Rationale: Ordinal variables have ordered categories with unequal intervals. Examples include
pain scales (mild/moderate/severe) or education levels (high school, bachelor's, master's,
doctorate) where the difference between categories is not mathematically defined .
Question 4
Which type of variable has ordered categories with equal intervals between values but no true
zero?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: C
Rationale: Interval variables have ordered categories with equal intervals between values but
lack a true zero point. Temperature in Celsius or Fahrenheit is a classic example: 0° does not
mean no temperature .
Question 5
,Which type of variable has ordered categories with equal intervals between values and a true
zero point?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct answer: D
Rationale: Ratio variables have a true zero point, allowing meaningful ratios (e.g., 20 kg is twice
as heavy as 10 kg). Examples include height, weight, age, and blood pressure .
Question 6
What is the term for a variable that is manipulated by the researcher to observe its effect?
A) Dependent variable
B) Independent variable
C) Confounding variable
D) Constant variable
Correct answer: B
Rationale: The independent variable is the one manipulated by the researcher to determine if it
causes changes in the dependent variable. It is often called the "predictor" or "explanatory"
variable .
Question 7
What is the term for the outcome variable that is measured to assess the effect of the
independent variable?
A) Dependent variable
B) Independent variable
C) Extraneous variable
D) Control variable
Correct answer: A
, Rationale: The dependent variable is the outcome that is measured to see if it changes as a
result of manipulating the independent variable. It is often called the "response" or "outcome"
variable .
Question 8
Which type of data consists of numbers representing counts or measurements?
A) Qualitative data
B) Categorical data
C) Quantitative data
D) Ordinal data
Correct answer: C
Rationale: Quantitative data consists of numerical values representing counts or measurements.
This data can be further classified as discrete (countable) or continuous (measurable).
Examples include heart rate, blood glucose, and number of hospital visits .
Question 9
Which type of data consists of labels or names used to identify categories?
A) Quantitative data
B) Numerical data
C) Qualitative data (categorical)
D) Continuous data
Correct answer: C
Rationale: Qualitative data (categorical) consists of non-numerical labels or names used to
classify items into categories. Examples include hair color, ethnicity, and disease type. This data
can be nominal or ordinal .
Question 10
What type of quantitative data can only take specific values (usually whole numbers)?
