D467 WGU EXPLORING DATA | 152 QUESTIONS |
WITH COMPLETE SOLUTIONS!!
To track people's online activities and interests, which method of data
collection is most effective? Answer - Cookies
What are cookies? Answer - 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. Answer - first-party
In data analytics, what term refers to all possible data values in a dataset?
Answer - 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? Answer - Second-party
What type of data is the height of a skyscraper? Answer - Continuous
In data analytics, what is the term for data that is generated from, and lives,
outside of an Answer - External
,Fill in the blank: A data model is used to organize _____ and how they relate to
one another. Answer - data elements
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
Fill in the blank: A data type is a specific kind of data _____ that tells what kind
of value the data is. Answer - attribute
In a data table, where are fields contained? Answer - Columns
When using long data, each subject has data in multiple rows. This is because
each row represents what? Answer - One observation per subject
Fill in the blank: The number of stars awarded to a product review is an
example of _____ data. Answer - 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? Answer - 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? Answer - 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? Answer - Boolean
, Which of the following questions would enable a data professional to collect
nominal qualitative data? Answer - Did anyone recommend our music lessons
to you?
Fill in the blank: Bias is a _____ preference in favor of or against a person,
group of people, or thing. Answer - conscious or subconscious
What is the term for the tendency to search for or interpret information in a
way that validates pre-existing beliefs? Answer - 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. Answer -
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? Answer - Current
What concept states that all data-processing activities and algorithms should
be completely explainable and understood by the individual who provides their
data? Answer - Transaction transparency
A data analyst removes personally identifying information from a dataset. What
task are they performing? Answer - Data anonymization
Before completing a survey, an individual acknowledges reading information
about how and why the data they provide will be used. What is this concept
called? Answer - Consent
WITH COMPLETE SOLUTIONS!!
To track people's online activities and interests, which method of data
collection is most effective? Answer - Cookies
What are cookies? Answer - 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. Answer - first-party
In data analytics, what term refers to all possible data values in a dataset?
Answer - 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? Answer - Second-party
What type of data is the height of a skyscraper? Answer - Continuous
In data analytics, what is the term for data that is generated from, and lives,
outside of an Answer - External
,Fill in the blank: A data model is used to organize _____ and how they relate to
one another. Answer - data elements
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
Fill in the blank: A data type is a specific kind of data _____ that tells what kind
of value the data is. Answer - attribute
In a data table, where are fields contained? Answer - Columns
When using long data, each subject has data in multiple rows. This is because
each row represents what? Answer - One observation per subject
Fill in the blank: The number of stars awarded to a product review is an
example of _____ data. Answer - 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? Answer - 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? Answer - 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? Answer - Boolean
, Which of the following questions would enable a data professional to collect
nominal qualitative data? Answer - Did anyone recommend our music lessons
to you?
Fill in the blank: Bias is a _____ preference in favor of or against a person,
group of people, or thing. Answer - conscious or subconscious
What is the term for the tendency to search for or interpret information in a
way that validates pre-existing beliefs? Answer - 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. Answer -
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? Answer - Current
What concept states that all data-processing activities and algorithms should
be completely explainable and understood by the individual who provides their
data? Answer - Transaction transparency
A data analyst removes personally identifying information from a dataset. What
task are they performing? Answer - Data anonymization
Before completing a survey, an individual acknowledges reading information
about how and why the data they provide will be used. What is this concept
called? Answer - Consent
