Data Literacy D772 WGU Question and
answers correctly solved 2026/2027
Sample - correct answer ✔A smaller, more manageable group selected from the population to
represent the larger group.
Sample (Example) - correct answer ✔A group of 500 high school students from different states across
the U.S.
Population - correct answer ✔The entire group of individuals or objects that you want to study.
Population (Example) - correct answer ✔All high school students in the United States.
What is a parameter in statistics? - correct answer ✔A numerical value describing an entire
population's characteristics.
Is a parameter a fixed value? - correct answer ✔Yes, a parameter is a fixed value.
Why is a parameter often unknown? - correct answer ✔Because collecting data from every member of
a large population is usually impractical or impossible.
What is a statistic? - correct answer ✔A numerical value that describes a characteristic of a sample.
How is a statistic calculated? - correct answer ✔It is calculated from the data collected from the
sample.
What is the purpose of using statistics? - correct answer ✔To estimate the corresponding population
parameter.
,Statistic (Example) - correct answer ✔The average height of 100 adult women randomly selected from
the United States.
Parameter (Example) - correct answer ✔The average height of all adult women in the United States.
Basic elements that make up a dataset - correct answer ✔individuals, variables, and data.
Individuals - correct answer ✔are the objects described by a set of data. people, animals, or things.
What we collect information on.
Variables - correct answer ✔are the characteristics or measurements that we are interested in
studying. Specific aspects of the individuals that we collect data on. Can be either quantitative
(numerical) or categorical (qualitative-Fav color, gender, job).
Data - correct answer ✔are the actual values of the variables
The ____ is the 100 first-year students who were randomly surveyed.
The ____ is a group of students who graduated from the university last year, randomly selected - correct
answer ✔Sample
The ____ is all first-year students attending Strime University this term.
The ____ is a group of all students who graduated from the university last year. - correct answer
✔Population
The ____ is the average (mean) amount of money spent (excluding books) by first-year university
students in the sample.
The ____ is the average cumulative GPA of students in the study who graduated from the university last
year. - correct answer ✔Statistic
, The ____ could be the amount of money spent (excluding books) by one first-year student.
The ____ is the cumulative GPA of one student who graduated from the university last year. - correct
answer ✔Variable
The ____ are the dollar amounts spent by the first-year students.
The ____ consists of the values 3.65, 2.80, 1.50, 3.90. - correct answer ✔Data
The ____ is the average (mean) amount of money spent (excluding books) by first-year university
students at Strime University this term.
The ____ is the average cumulative GPA of students who graduated from the university last year. -
correct answer ✔Parameter
Strata - correct answer ✔Subgroups within a population that share a common characteristic (e.g., age
group, gender, income level).
Strata (Example) - correct answer ✔A high school population might be divided into strata based on
grade level (freshmen, sophomores, juniors, seniors).
Proportionate Sample - correct answer ✔A sample where the number of individuals selected from
each stratum is proportional to the size of that stratum in the population.
Proportionate Sample (Example) - correct answer ✔If 25% of the high school population is freshmen,
then 25% of the sample should also be freshmen.
Stratified sampling - correct answer ✔involves dividing the population into distinct subgroups called
strata, based on specific characteristics such as age, gender, or socioeconomic status. Once the
population is divided into strata, a random sample is taken from each stratum in proportion to its
representation in the overall population. This ensures that the sample reflects the diversity of the
population in terms of the chosen characteristics
answers correctly solved 2026/2027
Sample - correct answer ✔A smaller, more manageable group selected from the population to
represent the larger group.
Sample (Example) - correct answer ✔A group of 500 high school students from different states across
the U.S.
Population - correct answer ✔The entire group of individuals or objects that you want to study.
Population (Example) - correct answer ✔All high school students in the United States.
What is a parameter in statistics? - correct answer ✔A numerical value describing an entire
population's characteristics.
Is a parameter a fixed value? - correct answer ✔Yes, a parameter is a fixed value.
Why is a parameter often unknown? - correct answer ✔Because collecting data from every member of
a large population is usually impractical or impossible.
What is a statistic? - correct answer ✔A numerical value that describes a characteristic of a sample.
How is a statistic calculated? - correct answer ✔It is calculated from the data collected from the
sample.
What is the purpose of using statistics? - correct answer ✔To estimate the corresponding population
parameter.
,Statistic (Example) - correct answer ✔The average height of 100 adult women randomly selected from
the United States.
Parameter (Example) - correct answer ✔The average height of all adult women in the United States.
Basic elements that make up a dataset - correct answer ✔individuals, variables, and data.
Individuals - correct answer ✔are the objects described by a set of data. people, animals, or things.
What we collect information on.
Variables - correct answer ✔are the characteristics or measurements that we are interested in
studying. Specific aspects of the individuals that we collect data on. Can be either quantitative
(numerical) or categorical (qualitative-Fav color, gender, job).
Data - correct answer ✔are the actual values of the variables
The ____ is the 100 first-year students who were randomly surveyed.
The ____ is a group of students who graduated from the university last year, randomly selected - correct
answer ✔Sample
The ____ is all first-year students attending Strime University this term.
The ____ is a group of all students who graduated from the university last year. - correct answer
✔Population
The ____ is the average (mean) amount of money spent (excluding books) by first-year university
students in the sample.
The ____ is the average cumulative GPA of students in the study who graduated from the university last
year. - correct answer ✔Statistic
, The ____ could be the amount of money spent (excluding books) by one first-year student.
The ____ is the cumulative GPA of one student who graduated from the university last year. - correct
answer ✔Variable
The ____ are the dollar amounts spent by the first-year students.
The ____ consists of the values 3.65, 2.80, 1.50, 3.90. - correct answer ✔Data
The ____ is the average (mean) amount of money spent (excluding books) by first-year university
students at Strime University this term.
The ____ is the average cumulative GPA of students who graduated from the university last year. -
correct answer ✔Parameter
Strata - correct answer ✔Subgroups within a population that share a common characteristic (e.g., age
group, gender, income level).
Strata (Example) - correct answer ✔A high school population might be divided into strata based on
grade level (freshmen, sophomores, juniors, seniors).
Proportionate Sample - correct answer ✔A sample where the number of individuals selected from
each stratum is proportional to the size of that stratum in the population.
Proportionate Sample (Example) - correct answer ✔If 25% of the high school population is freshmen,
then 25% of the sample should also be freshmen.
Stratified sampling - correct answer ✔involves dividing the population into distinct subgroups called
strata, based on specific characteristics such as age, gender, or socioeconomic status. Once the
population is divided into strata, a random sample is taken from each stratum in proportion to its
representation in the overall population. This ensures that the sample reflects the diversity of the
population in terms of the chosen characteristics
