Page 1 of 39
WGU D467 Exploring Data COMPLETE
QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
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?
Field
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the
data is.
attribute
In a data table, where are fields contained?
Columns
When using long data, each subject has data in multiple rows. This is because each row
represents what?
One observation per subject
1
, Page 2 of 39
Fill in the blank: The number of stars awarded to a product review is an example of _____
data.
discrete
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?
Historical
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?
Using a sample
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?
Boolean
Which of the following questions would enable a data professional to collect nominal
qualitative data?
Did anyone recommend our music lessons to you?
2
, Page 3 of 39
Fill in the blank: Bias is a _____ preference in favor of or against a person, group of people, or
thing.
conscious or subconscious
What is the term for the tendency to search for or interpret information in a way that
validates pre-existing beliefs?
Confirmation bias
Fill in the blank: Data is considered _____ when it is accurate, complete, and unbiased
information that has been vetted and proven fit for use.
reliable
A junior data analyst learns that the dataset they have been given is six years old. After
looking into this further, they also discovered that the age of the data is making the
information irrelevant to their project. What good data source principle have they used to
evaluate the dataset?
Current
What concept states that all data-processing activities and algorithms should be completely
explainable and understood by the individual who provides their data?
Transaction transparency
3
, Page 4 of 39
To track people's online activities and interests, which method of data collection is most
effective?
Cookies
What are cookies?
Small files stored on computers that contain information about users
Fill in the blank: For data analytics projects, _____ data is typically preferred because users
know it originated within the organization.
first-party
In data analytics, what term refers to all possible data values in a dataset?
Population
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?
Second-party
What type of data is the height of a skyscraper?
Continuous
In data analytics, what is the term for data that is generated from, and lives, outside of an
4
WGU D467 Exploring Data COMPLETE
QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
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?
Field
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the
data is.
attribute
In a data table, where are fields contained?
Columns
When using long data, each subject has data in multiple rows. This is because each row
represents what?
One observation per subject
1
, Page 2 of 39
Fill in the blank: The number of stars awarded to a product review is an example of _____
data.
discrete
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?
Historical
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?
Using a sample
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?
Boolean
Which of the following questions would enable a data professional to collect nominal
qualitative data?
Did anyone recommend our music lessons to you?
2
, Page 3 of 39
Fill in the blank: Bias is a _____ preference in favor of or against a person, group of people, or
thing.
conscious or subconscious
What is the term for the tendency to search for or interpret information in a way that
validates pre-existing beliefs?
Confirmation bias
Fill in the blank: Data is considered _____ when it is accurate, complete, and unbiased
information that has been vetted and proven fit for use.
reliable
A junior data analyst learns that the dataset they have been given is six years old. After
looking into this further, they also discovered that the age of the data is making the
information irrelevant to their project. What good data source principle have they used to
evaluate the dataset?
Current
What concept states that all data-processing activities and algorithms should be completely
explainable and understood by the individual who provides their data?
Transaction transparency
3
, Page 4 of 39
To track people's online activities and interests, which method of data collection is most
effective?
Cookies
What are cookies?
Small files stored on computers that contain information about users
Fill in the blank: For data analytics projects, _____ data is typically preferred because users
know it originated within the organization.
first-party
In data analytics, what term refers to all possible data values in a dataset?
Population
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?
Second-party
What type of data is the height of a skyscraper?
Continuous
In data analytics, what is the term for data that is generated from, and lives, outside of an
4
