D467 WGU EXPLORING DATA EXPECTED QUESTIONS
WITH VERIFIED ANSWERS
Question 1.
To track people's online activities and interests, which method of data collection is most
effective?
ANSWER
Cookies
Question 2.
What are cookies?
ANSWER
Small files stored on computers that contain information about users
Question 3.
Fill in the blank: For data analytics projects, _____ data is typically preferred because users know
it originated within the organization.
ANSWER
first-party
Question 4.
In data analytics, what term refers to all possible data values in a dataset?
ANSWER
Population
Question 5.
A grocery store chain purchases customer data from a credit card company. The grocer uses
this data to identify its most loyal customers and offer them special promotions and discounts.
What type of data is being used in this scenario?
ANSWER
Second-party
Question 6.
What type of data is the height of a skyscraper?
ANSWER
Continuous
1
,Question 7.
In data analytics, what is the term for data that is generated from, and lives, outside of an
ANSWER
External
Question 8.
Fill in the blank: A data model is used to organize _____ and how they relate to one another.
ANSWER
data elements
Question 9.
When discussing structured databases, data analysts refer to the data contained in a row as a
record. How do they refer to the data contained in a column?
ANSWER
Field
Question 10.
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the data
is.
ANSWER
attribute
Question 11.
In a data table, where are fields contained?
ANSWER
Columns
Question 12.
When using long data, each subject has data in multiple rows. This is because each row
represents what?
ANSWER
One observation per subject
Question 13.
Fill in the blank: The number of stars awarded to a product review is an example of _____ data.
ANSWER
discrete
2
, Question 14.
A data analyst works on an urgent traffic study. As a result of the short time frame, which type
of data might yield the best results?
ANSWER
Historical
Question 15.
A political scientist needs to poll all voters in Seoul, South Korea, in order to predict the
outcome of an election. Because it would be impossible to collect data from every single person
in the city, the political scientist polls a part of the population that is representative of the
whole. What does this scenario describe?
ANSWER
Using a sample
Question 16.
A data scientist at a tech company records whether users have accepted their company's terms
of service or not. What data type is being collected in this scenario?
ANSWER
Boolean
Question 17.
Which of the following questions would enable a data professional to collect nominal qualitative
data?
ANSWER
Did anyone recommend our music lessons to you?
Question 18.
Fill in the blank: Bias is a _____ preference in favor of or against a person, group of people, or
thing.
ANSWER
conscious or subconscious
Question 19.
What is the term for the tendency to search for or interpret information in a way that validates
pre-existing beliefs?
ANSWER
Confirmation bias
3
WITH VERIFIED ANSWERS
Question 1.
To track people's online activities and interests, which method of data collection is most
effective?
ANSWER
Cookies
Question 2.
What are cookies?
ANSWER
Small files stored on computers that contain information about users
Question 3.
Fill in the blank: For data analytics projects, _____ data is typically preferred because users know
it originated within the organization.
ANSWER
first-party
Question 4.
In data analytics, what term refers to all possible data values in a dataset?
ANSWER
Population
Question 5.
A grocery store chain purchases customer data from a credit card company. The grocer uses
this data to identify its most loyal customers and offer them special promotions and discounts.
What type of data is being used in this scenario?
ANSWER
Second-party
Question 6.
What type of data is the height of a skyscraper?
ANSWER
Continuous
1
,Question 7.
In data analytics, what is the term for data that is generated from, and lives, outside of an
ANSWER
External
Question 8.
Fill in the blank: A data model is used to organize _____ and how they relate to one another.
ANSWER
data elements
Question 9.
When discussing structured databases, data analysts refer to the data contained in a row as a
record. How do they refer to the data contained in a column?
ANSWER
Field
Question 10.
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the data
is.
ANSWER
attribute
Question 11.
In a data table, where are fields contained?
ANSWER
Columns
Question 12.
When using long data, each subject has data in multiple rows. This is because each row
represents what?
ANSWER
One observation per subject
Question 13.
Fill in the blank: The number of stars awarded to a product review is an example of _____ data.
ANSWER
discrete
2
, Question 14.
A data analyst works on an urgent traffic study. As a result of the short time frame, which type
of data might yield the best results?
ANSWER
Historical
Question 15.
A political scientist needs to poll all voters in Seoul, South Korea, in order to predict the
outcome of an election. Because it would be impossible to collect data from every single person
in the city, the political scientist polls a part of the population that is representative of the
whole. What does this scenario describe?
ANSWER
Using a sample
Question 16.
A data scientist at a tech company records whether users have accepted their company's terms
of service or not. What data type is being collected in this scenario?
ANSWER
Boolean
Question 17.
Which of the following questions would enable a data professional to collect nominal qualitative
data?
ANSWER
Did anyone recommend our music lessons to you?
Question 18.
Fill in the blank: Bias is a _____ preference in favor of or against a person, group of people, or
thing.
ANSWER
conscious or subconscious
Question 19.
What is the term for the tendency to search for or interpret information in a way that validates
pre-existing beliefs?
ANSWER
Confirmation bias
3
