WGU D467 EXPLORING DATA COMPLETE
EXAMINATION TEST QUESTIONS WITH
VERIFIED SOLUTIONS
●● Sample (Example)
Answer: A group of 500 high school students from different states across
the U.S.
●● Population
Answer: The entire group of individuals or objects that you want to
study.
●● Population (Example)
Answer: All high school students in the United States.
●● What is a parameter in statistics?
Answer: A numerical value describing an entire population's
characteristics.
●● Is a parameter a fixed value?
Answer: Yes, a parameter is a fixed value.
,●● Why is a parameter often unknown?
Answer: Because collecting data from every member of a large
population is usually impractical or impossible.
●● What is a statistic?
Answer: A numerical value that describes a characteristic of a sample.
●● How is a statistic calculated?
Answer: It is calculated from the data collected from the sample.
●● What is the purpose of using statistics?
Answer: To estimate the corresponding population parameter.
●● Statistic (Example)
Answer: The average height of 100 adult women randomly selected
from the United States.
●● Parameter (Example)
Answer: The average height of all adult women in the United States.
●● Basic elements that make up a dataset
Answer: individuals, variables, and data.
, ●● Individuals
Answer: are the objects described by a set of data. people, animals, or
things. What we collect information on.
●● Variables
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
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
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.
Answer: Population
EXAMINATION TEST QUESTIONS WITH
VERIFIED SOLUTIONS
●● Sample (Example)
Answer: A group of 500 high school students from different states across
the U.S.
●● Population
Answer: The entire group of individuals or objects that you want to
study.
●● Population (Example)
Answer: All high school students in the United States.
●● What is a parameter in statistics?
Answer: A numerical value describing an entire population's
characteristics.
●● Is a parameter a fixed value?
Answer: Yes, a parameter is a fixed value.
,●● Why is a parameter often unknown?
Answer: Because collecting data from every member of a large
population is usually impractical or impossible.
●● What is a statistic?
Answer: A numerical value that describes a characteristic of a sample.
●● How is a statistic calculated?
Answer: It is calculated from the data collected from the sample.
●● What is the purpose of using statistics?
Answer: To estimate the corresponding population parameter.
●● Statistic (Example)
Answer: The average height of 100 adult women randomly selected
from the United States.
●● Parameter (Example)
Answer: The average height of all adult women in the United States.
●● Basic elements that make up a dataset
Answer: individuals, variables, and data.
, ●● Individuals
Answer: are the objects described by a set of data. people, animals, or
things. What we collect information on.
●● Variables
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
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
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.
Answer: Population
