1|Page
WGU D491 INTRODUCTION TO ANALYTICS EXAM AND
PRACTICE EXAM WITH STUDY GUIDE 2026 | ACCURATE
ACTUAL EXAM FREQUENTLY TESTED QUESTIONS WITH
DETAILED ANSWERS
What is the first phase of the data analytics lifecycle?
......ANSWER......The first phase is Data Discovery, where the problem is
defined and data sources are identified.
Which task involves assessing the quality of data? ......ANSWER......Data
Profiling is the task that involves assessing the quality and structure of
data.
What is deduplication in data preparation?
......ANSWER......Deduplication is the process of removing duplicate
records from a dataset to ensure data integrity.
What does imputation refer to in data preparation?
......ANSWER......Imputation refers to the process of filling in missing
values in a dataset.
What is truncation in data preparation? ......ANSWER......Truncation is
the process of shortening data entries, often to fit a specific format or
length.
pg. 1
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What is the role of a data analyst? ......ANSWER......A data analyst
interprets data and provides insights to help inform business decisions.
What is the primary responsibility of a BI analyst? ......ANSWER......A BI
analyst focuses on analyzing data to create business intelligence reports
and dashboards.
What does a data scientist do? ......ANSWER......A data scientist uses
statistical methods and algorithms to analyze complex data and extract
insights.
What is the role of a data engineer? ......ANSWER......A data engineer
builds and maintains the infrastructure and architecture for data
generation and storage.
What does a database administrator do? ......ANSWER......A database
administrator manages and maintains database systems to ensure their
performance and security.
Who is a project sponsor? ......ANSWER......A project sponsor is a person
who provides resources and support for a project, ensuring its
alignment with business goals.
What is the role of a project manager? ......ANSWER......A project
manager oversees the planning, execution, and completion of a project,
ensuring it meets its objectives.
pg. 2
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What are business users in the context of data analytics?
......ANSWER......Business users are individuals who utilize data insights
to make informed decisions in their respective roles.
What type of visualization is a line chart? ......ANSWER......A line chart is
a graphical representation of data points connected by straight line
segments, often used to show trends over time.
What is a scatter plot used for? ......ANSWER......A scatter plot is used to
display values for typically two variables for a set of data, showing
relationships or correlations.
What does a histogram represent? ......ANSWER......A histogram
represents the distribution of numerical data by showing the frequency
of data points within specified ranges.
What is a box plot? ......ANSWER......A box plot is a standardized way of
displaying the distribution of data based on a five-number summary:
minimum, first quartile, median, third quartile, and maximum.
What is a dashboard in data visualization? ......ANSWER......A dashboard
is a visual display of key metrics and data points, often used to monitor
performance and trends.
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, 4|Page
What is regression analysis? ......ANSWER......Regression analysis is a
statistical method used to determine the relationship between a
dependent variable and one or more independent variables.
What is logistic regression used for? ......ANSWER......Logistic regression
is used for predicting the probability of a binary outcome based on one
or more predictor variables.
What is time series analysis? ......ANSWER......Time series analysis
involves analyzing data points collected or recorded at specific time
intervals to identify trends and patterns.
What are association rules in data analytics?
......ANSWER......Association rules are used to discover interesting
relationships between variables in large datasets, often used in market
basket analysis.
What is clustering in data analysis? ......ANSWER......Clustering is a
technique used to group a set of objects in such a way that objects in
the same group are more similar to each other than to those in other
groups.
What is text analysis? ......ANSWER......Text analysis is the process of
deriving meaningful information from text data through various
techniques such as natural language processing.
pg. 4
WGU D491 INTRODUCTION TO ANALYTICS EXAM AND
PRACTICE EXAM WITH STUDY GUIDE 2026 | ACCURATE
ACTUAL EXAM FREQUENTLY TESTED QUESTIONS WITH
DETAILED ANSWERS
What is the first phase of the data analytics lifecycle?
......ANSWER......The first phase is Data Discovery, where the problem is
defined and data sources are identified.
Which task involves assessing the quality of data? ......ANSWER......Data
Profiling is the task that involves assessing the quality and structure of
data.
What is deduplication in data preparation?
......ANSWER......Deduplication is the process of removing duplicate
records from a dataset to ensure data integrity.
What does imputation refer to in data preparation?
......ANSWER......Imputation refers to the process of filling in missing
values in a dataset.
What is truncation in data preparation? ......ANSWER......Truncation is
the process of shortening data entries, often to fit a specific format or
length.
pg. 1
,2|Page
What is the role of a data analyst? ......ANSWER......A data analyst
interprets data and provides insights to help inform business decisions.
What is the primary responsibility of a BI analyst? ......ANSWER......A BI
analyst focuses on analyzing data to create business intelligence reports
and dashboards.
What does a data scientist do? ......ANSWER......A data scientist uses
statistical methods and algorithms to analyze complex data and extract
insights.
What is the role of a data engineer? ......ANSWER......A data engineer
builds and maintains the infrastructure and architecture for data
generation and storage.
What does a database administrator do? ......ANSWER......A database
administrator manages and maintains database systems to ensure their
performance and security.
Who is a project sponsor? ......ANSWER......A project sponsor is a person
who provides resources and support for a project, ensuring its
alignment with business goals.
What is the role of a project manager? ......ANSWER......A project
manager oversees the planning, execution, and completion of a project,
ensuring it meets its objectives.
pg. 2
,3|Page
What are business users in the context of data analytics?
......ANSWER......Business users are individuals who utilize data insights
to make informed decisions in their respective roles.
What type of visualization is a line chart? ......ANSWER......A line chart is
a graphical representation of data points connected by straight line
segments, often used to show trends over time.
What is a scatter plot used for? ......ANSWER......A scatter plot is used to
display values for typically two variables for a set of data, showing
relationships or correlations.
What does a histogram represent? ......ANSWER......A histogram
represents the distribution of numerical data by showing the frequency
of data points within specified ranges.
What is a box plot? ......ANSWER......A box plot is a standardized way of
displaying the distribution of data based on a five-number summary:
minimum, first quartile, median, third quartile, and maximum.
What is a dashboard in data visualization? ......ANSWER......A dashboard
is a visual display of key metrics and data points, often used to monitor
performance and trends.
pg. 3
, 4|Page
What is regression analysis? ......ANSWER......Regression analysis is a
statistical method used to determine the relationship between a
dependent variable and one or more independent variables.
What is logistic regression used for? ......ANSWER......Logistic regression
is used for predicting the probability of a binary outcome based on one
or more predictor variables.
What is time series analysis? ......ANSWER......Time series analysis
involves analyzing data points collected or recorded at specific time
intervals to identify trends and patterns.
What are association rules in data analytics?
......ANSWER......Association rules are used to discover interesting
relationships between variables in large datasets, often used in market
basket analysis.
What is clustering in data analysis? ......ANSWER......Clustering is a
technique used to group a set of objects in such a way that objects in
the same group are more similar to each other than to those in other
groups.
What is text analysis? ......ANSWER......Text analysis is the process of
deriving meaningful information from text data through various
techniques such as natural language processing.
pg. 4
