WGU D772 Statistical Data
Literacy: Complete Objective
Assessment Practice Exam
Questions with Answers &
Detailed Rationales .
**Q1: A student is designing a survey for a project. Which question will result in
quantitative data?**
A) What is your favorite color?
B) How much sleep do you get each night?
C) What is your preferred brand of sneakers?
D) Which political candidate do you support?
**Answer: B) How much sleep do you get each night?**
**Rationale:** Quantitative data is numerical and can be measured or counted.
"How much sleep" requires a numerical answer (e.g., 7 hours), making it
quantitative. The other options are categorical (qualitative) as they describe
qualities or characteristics.
---
**Q2: A psychologist splits participants into four groups and gives each a maze
with a different color. The time to solve the maze is recorded. What is the
explanatory variable?**
,A) The time to solve the maze
B) The specific maze color
C) The participants' ages
D) The difficulty of the maze
**Answer: B) The specific maze color**
**Rationale:** The explanatory variable (independent variable) is the one
manipulated by the researcher to see if it causes a change in the response
variable. Here, maze color is manipulated to observe its effect on maze-solving
time.
---
**Q3: What is a sample in statistical research?**
A) The entire group of individuals or objects being studied
B) A smaller, more manageable group selected from the population to represent
the larger group
C) A numerical value that describes a population characteristic
D) The actual values of the variables collected
**Answer: B) A smaller, more manageable group selected from the population to
represent the larger group**
,**Rationale:** A sample is a subset of the population selected for study.
Researchers use samples because studying an entire population is often
impractical or impossible.
---
**Q4: What is a population in statistical research?**
A) A smaller group selected for study
B) The entire group of individuals or objects that you want to study
C) A numerical value calculated from sample data
D) A characteristic measured on individuals
**Answer: B) The entire group of individuals or objects that you want to study**
**Rationale:** A population is the complete set of individuals or objects that
meet the criteria of interest in a study. It includes all members of the defined
group.
---
**Q5: Which of the following is an example of a population?**
A) 100 randomly selected bees from a hive
B) All high school students in the United States
C) The average height of 50 women
, D) A group of patients in a clinical trial
**Answer: B) All high school students in the United States**
**Rationale:** A population includes every member of a defined group. All high
school students in the United States represents the complete group of interest,
while the other options describe samples or subsets.
---
**Q6: What are variables in a dataset?**
A) The objects being studied
B) The actual values collected
C) The characteristics or measurements that we are interested in studying
D) The numerical summaries of data
**Answer: C) The characteristics or measurements that we are interested in
studying**
**Rationale:** Variables are the specific characteristics or attributes that
researchers measure or observe for each individual in a study. They represent
what is being studied.
---
Literacy: Complete Objective
Assessment Practice Exam
Questions with Answers &
Detailed Rationales .
**Q1: A student is designing a survey for a project. Which question will result in
quantitative data?**
A) What is your favorite color?
B) How much sleep do you get each night?
C) What is your preferred brand of sneakers?
D) Which political candidate do you support?
**Answer: B) How much sleep do you get each night?**
**Rationale:** Quantitative data is numerical and can be measured or counted.
"How much sleep" requires a numerical answer (e.g., 7 hours), making it
quantitative. The other options are categorical (qualitative) as they describe
qualities or characteristics.
---
**Q2: A psychologist splits participants into four groups and gives each a maze
with a different color. The time to solve the maze is recorded. What is the
explanatory variable?**
,A) The time to solve the maze
B) The specific maze color
C) The participants' ages
D) The difficulty of the maze
**Answer: B) The specific maze color**
**Rationale:** The explanatory variable (independent variable) is the one
manipulated by the researcher to see if it causes a change in the response
variable. Here, maze color is manipulated to observe its effect on maze-solving
time.
---
**Q3: What is a sample in statistical research?**
A) The entire group of individuals or objects being studied
B) A smaller, more manageable group selected from the population to represent
the larger group
C) A numerical value that describes a population characteristic
D) The actual values of the variables collected
**Answer: B) A smaller, more manageable group selected from the population to
represent the larger group**
,**Rationale:** A sample is a subset of the population selected for study.
Researchers use samples because studying an entire population is often
impractical or impossible.
---
**Q4: What is a population in statistical research?**
A) A smaller group selected for study
B) The entire group of individuals or objects that you want to study
C) A numerical value calculated from sample data
D) A characteristic measured on individuals
**Answer: B) The entire group of individuals or objects that you want to study**
**Rationale:** A population is the complete set of individuals or objects that
meet the criteria of interest in a study. It includes all members of the defined
group.
---
**Q5: Which of the following is an example of a population?**
A) 100 randomly selected bees from a hive
B) All high school students in the United States
C) The average height of 50 women
, D) A group of patients in a clinical trial
**Answer: B) All high school students in the United States**
**Rationale:** A population includes every member of a defined group. All high
school students in the United States represents the complete group of interest,
while the other options describe samples or subsets.
---
**Q6: What are variables in a dataset?**
A) The objects being studied
B) The actual values collected
C) The characteristics or measurements that we are interested in studying
D) The numerical summaries of data
**Answer: C) The characteristics or measurements that we are interested in
studying**
**Rationale:** Variables are the specific characteristics or attributes that
researchers measure or observe for each individual in a study. They represent
what is being studied.
---
