WGU D204 ACTUAL EXAM PAPER 2026
QUESTIONS AND ANSWERS 100% CORRECT
⩥ Define: discovery phase Answer: Analyst defines the major questions
of interest that need to be answered, needs of the stakeholders and
assesses the resource constraints of the project
⩥ Define: data acquisition (data collecting) Answer: Frequently
retrieved from a database
⩥ What can an analyst do if data is not available? Answer: use tools like
web scraping or surveys to get it.
⩥ What happens if the data cleaning step is ignored? Answer: The
results from the analysis become irrelevant
⩥ What tools are used for data cleansing? Answer: SQL, Python, R,
Excel
⩥ What is data quality measured in terms of? (2) Answer: uniqueness,
relevance
⩥ Define: Data Exploration Answer: The analyst begins to understand
the basic nature of data and the relationships within it
,⩥ What does data exploration rely on? (2) Answer: Use of data
visualization tools and numerical summaries
⩥ Define: Predictive Modeling Answer: Allow the analyst to move
beyond describing the data to creating models that enable predictions of
outcomes of interest
⩥ What tools are used for predictive modeling? Answer: Python, R
⩥ What tools became popular with the ability of computers to look for
patterns in large amounts of data? Answer: Data Mining Tools. Python,
R
⩥ What is the last step of the data analytics journey? Answer: Reporting
and Visualization
⩥ What is the first step of the data analytics journey? Answer: Discovery
Phase / Business Understanding
⩥ What is the second step of the data analytics journey? Answer: Data
Acquisition / Data Collecting
, ⩥ What is the third step of the data analytics journey? Answer: Data
Cleaning / Data Wrangling / Feature Engineering / Data Munging
⩥ What is the fourth step of the data analytics journey? Answer: Data
Exploration
⩥ What is the fifth step of the data analytics journey? Answer:
Predictive Modeling
⩥ What is the sixth step of the data analytics journey? Answer: Data
Mining
⩥ What tools are used for reporting and visualization? Answer: Tableau
⩥ What are the goals of the reporting and visualization phase? Answer:
To provide actionable insights for various stakeholders
⩥ Define: Reporting & Visualization Answer: The analyst tells the story
of the data and uses graphs or interactive dashboards to inform others of
the findings from the analyses
⩥ Data analysis is often seen as a combination of ______ and ______.
Answer: Value & Difficulty
QUESTIONS AND ANSWERS 100% CORRECT
⩥ Define: discovery phase Answer: Analyst defines the major questions
of interest that need to be answered, needs of the stakeholders and
assesses the resource constraints of the project
⩥ Define: data acquisition (data collecting) Answer: Frequently
retrieved from a database
⩥ What can an analyst do if data is not available? Answer: use tools like
web scraping or surveys to get it.
⩥ What happens if the data cleaning step is ignored? Answer: The
results from the analysis become irrelevant
⩥ What tools are used for data cleansing? Answer: SQL, Python, R,
Excel
⩥ What is data quality measured in terms of? (2) Answer: uniqueness,
relevance
⩥ Define: Data Exploration Answer: The analyst begins to understand
the basic nature of data and the relationships within it
,⩥ What does data exploration rely on? (2) Answer: Use of data
visualization tools and numerical summaries
⩥ Define: Predictive Modeling Answer: Allow the analyst to move
beyond describing the data to creating models that enable predictions of
outcomes of interest
⩥ What tools are used for predictive modeling? Answer: Python, R
⩥ What tools became popular with the ability of computers to look for
patterns in large amounts of data? Answer: Data Mining Tools. Python,
R
⩥ What is the last step of the data analytics journey? Answer: Reporting
and Visualization
⩥ What is the first step of the data analytics journey? Answer: Discovery
Phase / Business Understanding
⩥ What is the second step of the data analytics journey? Answer: Data
Acquisition / Data Collecting
, ⩥ What is the third step of the data analytics journey? Answer: Data
Cleaning / Data Wrangling / Feature Engineering / Data Munging
⩥ What is the fourth step of the data analytics journey? Answer: Data
Exploration
⩥ What is the fifth step of the data analytics journey? Answer:
Predictive Modeling
⩥ What is the sixth step of the data analytics journey? Answer: Data
Mining
⩥ What tools are used for reporting and visualization? Answer: Tableau
⩥ What are the goals of the reporting and visualization phase? Answer:
To provide actionable insights for various stakeholders
⩥ Define: Reporting & Visualization Answer: The analyst tells the story
of the data and uses graphs or interactive dashboards to inform others of
the findings from the analyses
⩥ Data analysis is often seen as a combination of ______ and ______.
Answer: Value & Difficulty
