1|Page
WGU D467 Objective Assessment Final Exam Newest
2026/2027 ||Verified Exam!!!||WGU D467 Exploring
Data OA Exam Newest 2026/2027 Exam Complete 100
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+||Newest Exam!!!
Which statement is true about sampling, irrespective of
sample size?
The sample standard deviation (Stdev) is the same as the
population Stdev.
The sample distribution approximates to normal
distribution.
The sample bias is reduced if the sample being selected is
representative of the population.
The sample mean approaches the population mean -
ANSWER-The sample bias is reduced if the sample being
selected is representative of the population.
A data analyst is performing analysis on data stored in a
big data platform with state-of-the-art analysis tools.
Insufficient sample size is rendering the current analysis
ineffective. What is the primary challenge of a larger
sample size?
,2|Page
Collecting a larger sample size is more expensive.
Analyzing a larger sample size is complex.
Storing a larger sample size is difficult.
Cleansing a larger sample size is complicated. -
ANSWER-Collecting a larger sample size is more
expensive.
In the next six months, an analyst is expected to analyze
and present the effects of monthly promotions on sales of
a new product released one month ago. Which solution for
insufficient data should this analyst pursue?
Look for a new data set
Identify trends with available data
Speak with stakeholders and adjust the objective
Wait for more data - ANSWER-Wait for more data
A team leader is assigned the task of evaluating the
schema of a data set as part of data cleansing. How would
the team leader define a schema to the analyst
collaborating on the project prior to commencing
cleansing?
How well two or more data sets work together
,3|Page
A way of describing how something is organized
A process of combining two or more data sets into a single
data set
A way of matching fields in separate databases -
ANSWER-A way of describing how something is
organized
An analyst performing data cleansing on invoice data
would like to select and view rows that have an amount
paid that is greater than $100. Which spreadsheet
functionality should the analyst use?
COUNTIF
Conditional formatting
Filter
Remove duplicates - ANSWER-Filter
Why is clean data critical for data analysis?
It ensures data drives the decision the analyst intends to
communicate.
It ensures data used for analysis reflects operational
reality.
, 4|Page
It ensures data is structured to enable effective analysis.
It ensures data is visualized to make decisions. -
ANSWER-It ensures data used for analysis reflects
operational reality.
What does an UPDATE statement do after execution in
Structured Query Language (SQL)?
Modifies values in certain cells of a table based on
conditions
Inserts new rows into the table based on data provided in
the query
Removes tables based on the query
Creates a temporary table to be downloaded for analysis
and visualization - ANSWER-Modifies values in certain
cells of a table based on conditions
An analyst wants to extract data from a table by filtering
for certain conditions prior to performing data cleansing.
Which Structured Query Language (SQL) statement will
perform this function?
LENGTH statement
DISTINCT statement
WGU D467 Objective Assessment Final Exam Newest
2026/2027 ||Verified Exam!!!||WGU D467 Exploring
Data OA Exam Newest 2026/2027 Exam Complete 100
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+||Newest Exam!!!
Which statement is true about sampling, irrespective of
sample size?
The sample standard deviation (Stdev) is the same as the
population Stdev.
The sample distribution approximates to normal
distribution.
The sample bias is reduced if the sample being selected is
representative of the population.
The sample mean approaches the population mean -
ANSWER-The sample bias is reduced if the sample being
selected is representative of the population.
A data analyst is performing analysis on data stored in a
big data platform with state-of-the-art analysis tools.
Insufficient sample size is rendering the current analysis
ineffective. What is the primary challenge of a larger
sample size?
,2|Page
Collecting a larger sample size is more expensive.
Analyzing a larger sample size is complex.
Storing a larger sample size is difficult.
Cleansing a larger sample size is complicated. -
ANSWER-Collecting a larger sample size is more
expensive.
In the next six months, an analyst is expected to analyze
and present the effects of monthly promotions on sales of
a new product released one month ago. Which solution for
insufficient data should this analyst pursue?
Look for a new data set
Identify trends with available data
Speak with stakeholders and adjust the objective
Wait for more data - ANSWER-Wait for more data
A team leader is assigned the task of evaluating the
schema of a data set as part of data cleansing. How would
the team leader define a schema to the analyst
collaborating on the project prior to commencing
cleansing?
How well two or more data sets work together
,3|Page
A way of describing how something is organized
A process of combining two or more data sets into a single
data set
A way of matching fields in separate databases -
ANSWER-A way of describing how something is
organized
An analyst performing data cleansing on invoice data
would like to select and view rows that have an amount
paid that is greater than $100. Which spreadsheet
functionality should the analyst use?
COUNTIF
Conditional formatting
Filter
Remove duplicates - ANSWER-Filter
Why is clean data critical for data analysis?
It ensures data drives the decision the analyst intends to
communicate.
It ensures data used for analysis reflects operational
reality.
, 4|Page
It ensures data is structured to enable effective analysis.
It ensures data is visualized to make decisions. -
ANSWER-It ensures data used for analysis reflects
operational reality.
What does an UPDATE statement do after execution in
Structured Query Language (SQL)?
Modifies values in certain cells of a table based on
conditions
Inserts new rows into the table based on data provided in
the query
Removes tables based on the query
Creates a temporary table to be downloaded for analysis
and visualization - ANSWER-Modifies values in certain
cells of a table based on conditions
An analyst wants to extract data from a table by filtering
for certain conditions prior to performing data cleansing.
Which Structured Query Language (SQL) statement will
perform this function?
LENGTH statement
DISTINCT statement
