WGU D204 THE DATA ANALYTICS JOURNEY EXAM 200 Questions and
Correct Answers with Detailed Explanations
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ABOUT THIS EXAM
WGU D204 The Data Analytics Journey introduces foundational concepts of data analytics
including the analytics lifecycle, data acquisition, cleaning, exploration, modeling, mining, and
reporting. This practice exam is designed to prepare students for the objective assessment
based on the official course materials .
Exam Structure:
- Total Practice Questions: 200
- Format: Multiple Choice, Select All That Apply
- Content Areas: Data Analytics Lifecycle, Data Acquisition and Cleaning, Data Exploration,
Predictive Modeling, Data Mining, Reporting and Visualization, Roles and Responsibilities,
Ethical and Legal Issues
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SECTION 1: THE DATA ANALYTICS LIFECYCLE
Questions 1-30
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QUESTION 1
,What are the seven steps of the data analytics journey in order?
A. Business Understanding, Data Acquisition, Data Cleaning, Data Exploration, Predictive
Modeling, Data Mining, Reporting & Visualization
B. Data Acquisition, Data Cleaning, Data Exploration, Predictive Modeling, Data Mining,
Reporting, Business Understanding
C. Business Understanding, Data Cleaning, Data Acquisition, Data Exploration, Data Mining,
Predictive Modeling, Reporting
D. Data Exploration, Data Acquisition, Data Cleaning, Predictive Modeling, Data Mining,
Reporting, Business Understanding
CORRECT ANSWER: A
RATIONALE: The correct order of the data analytics journey is: Business Understanding
(Discovery Phase), Data Acquisition, Data Cleaning, Data Exploration, Predictive Modeling, Data
Mining, and Reporting & Visualization .
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QUESTION 2
During which phase of the data analytics lifecycle does an analyst define the major questions of
interest, understand stakeholder needs, and assess resource constraints?
A. Data Acquisition
B. Data Exploration
C. Discovery (Business Understanding)
D. Predictive Modeling
,CORRECT ANSWER: C
RATIONALE: The Discovery phase (also called Business Understanding) is where the analyst
defines the major questions of interest that need to be answered, understands the needs of the
stakeholders, and assesses the resource constraints in the project .
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QUESTION 3
In which phase of the data analytics lifecycle does an analyst build a graph?
A. Data exploration
B. Discovery
C. Predictive modeling
D. Data acquisition
CORRECT ANSWER: A
RATIONALE: Building graphs occurs during the Data Exploration phase, where analysts use data
visualization tools to understand the basic nature of data and relationships within it .
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QUESTION 4
An analyst applies a statistical formula to obtain the average temperature for a city over the last
20 years. Which phase of the data analytics life cycle is represented by this activity?
, A. Discovery
B. Exploration
C. Modeling
D. Reporting
CORRECT ANSWER: B
RATIONALE: Computing descriptive statistics such as averages falls under the Data Exploration
phase, where analysts use numerical summaries to understand the basic nature of the data .
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QUESTION 5
An analyst has been asked to define variables in a dataset that may contain missing values.
Which activity of the analytics life cycle is represented?
A. Data collection
B. Data cleaning
C. Transforming improperly formatted text
D. Disqualifying data sources
CORRECT ANSWER: B
RATIONALE: Defining variables that may contain missing values is part of Data Cleaning, which is
the most labor-intensive phase involving fixing improperly formatted values and dealing with
missing data .
Correct Answers with Detailed Explanations
---
ABOUT THIS EXAM
WGU D204 The Data Analytics Journey introduces foundational concepts of data analytics
including the analytics lifecycle, data acquisition, cleaning, exploration, modeling, mining, and
reporting. This practice exam is designed to prepare students for the objective assessment
based on the official course materials .
Exam Structure:
- Total Practice Questions: 200
- Format: Multiple Choice, Select All That Apply
- Content Areas: Data Analytics Lifecycle, Data Acquisition and Cleaning, Data Exploration,
Predictive Modeling, Data Mining, Reporting and Visualization, Roles and Responsibilities,
Ethical and Legal Issues
---
SECTION 1: THE DATA ANALYTICS LIFECYCLE
Questions 1-30
---
QUESTION 1
,What are the seven steps of the data analytics journey in order?
A. Business Understanding, Data Acquisition, Data Cleaning, Data Exploration, Predictive
Modeling, Data Mining, Reporting & Visualization
B. Data Acquisition, Data Cleaning, Data Exploration, Predictive Modeling, Data Mining,
Reporting, Business Understanding
C. Business Understanding, Data Cleaning, Data Acquisition, Data Exploration, Data Mining,
Predictive Modeling, Reporting
D. Data Exploration, Data Acquisition, Data Cleaning, Predictive Modeling, Data Mining,
Reporting, Business Understanding
CORRECT ANSWER: A
RATIONALE: The correct order of the data analytics journey is: Business Understanding
(Discovery Phase), Data Acquisition, Data Cleaning, Data Exploration, Predictive Modeling, Data
Mining, and Reporting & Visualization .
---
QUESTION 2
During which phase of the data analytics lifecycle does an analyst define the major questions of
interest, understand stakeholder needs, and assess resource constraints?
A. Data Acquisition
B. Data Exploration
C. Discovery (Business Understanding)
D. Predictive Modeling
,CORRECT ANSWER: C
RATIONALE: The Discovery phase (also called Business Understanding) is where the analyst
defines the major questions of interest that need to be answered, understands the needs of the
stakeholders, and assesses the resource constraints in the project .
---
QUESTION 3
In which phase of the data analytics lifecycle does an analyst build a graph?
A. Data exploration
B. Discovery
C. Predictive modeling
D. Data acquisition
CORRECT ANSWER: A
RATIONALE: Building graphs occurs during the Data Exploration phase, where analysts use data
visualization tools to understand the basic nature of data and relationships within it .
---
QUESTION 4
An analyst applies a statistical formula to obtain the average temperature for a city over the last
20 years. Which phase of the data analytics life cycle is represented by this activity?
, A. Discovery
B. Exploration
C. Modeling
D. Reporting
CORRECT ANSWER: B
RATIONALE: Computing descriptive statistics such as averages falls under the Data Exploration
phase, where analysts use numerical summaries to understand the basic nature of the data .
---
QUESTION 5
An analyst has been asked to define variables in a dataset that may contain missing values.
Which activity of the analytics life cycle is represented?
A. Data collection
B. Data cleaning
C. Transforming improperly formatted text
D. Disqualifying data sources
CORRECT ANSWER: B
RATIONALE: Defining variables that may contain missing values is part of Data Cleaning, which is
the most labor-intensive phase involving fixing improperly formatted values and dealing with
missing data .
