Data Literacy D772 WGU UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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
ACTUAL Exam Questions and CORRECT
Answers
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
