D 467 / D467 Pre- Assessment
(Latest Update )
Exploring Data | Review Questions
and Verified Answers | Grade A |
100% Correct - WGU
Question:
A company has sales in multiple countries and needs to merge the sales data
into a single repository.
Which data field will need a thorough integrity check before the merge?
Answer:
Total revenue
Question:
What does a statistical power of 0.75 indicate?
Answer:
There is a 75% chance of getting a statistically significant result with the test.
,Question:
An analyst is explaining the results of an analysis to stakeholders and wants to
highlight the sample used.
How should this analyst explain the concept of a sample in the context of data
analysis?
Answer:
A representative subset of all values within a data set
Question:
An analyst wants to determine the number of households with a minivan in
the state of New York. Considering that it is unfeasible to survey the
population, the analyst surveys enough people for it to be a representative
sample.
Which data integrity concept does this describe?
Answer:
Sampling
, Question:
What is a valid data constraint for a column containing dates to ensure
integrity?
Answer:
Format
Question:
An analyst is expected to map the location of all stores in a company retail
network based on data from the sales team.
Which field's data integrity check is relevant to this task?
Answer:
Store address
Question:
An analyst entering recently paid invoices into an accounting system skips the
decimal values of the amount paid.
Which type of dirty data does this scenario present?
Answer:
Incorrect data
(Latest Update )
Exploring Data | Review Questions
and Verified Answers | Grade A |
100% Correct - WGU
Question:
A company has sales in multiple countries and needs to merge the sales data
into a single repository.
Which data field will need a thorough integrity check before the merge?
Answer:
Total revenue
Question:
What does a statistical power of 0.75 indicate?
Answer:
There is a 75% chance of getting a statistically significant result with the test.
,Question:
An analyst is explaining the results of an analysis to stakeholders and wants to
highlight the sample used.
How should this analyst explain the concept of a sample in the context of data
analysis?
Answer:
A representative subset of all values within a data set
Question:
An analyst wants to determine the number of households with a minivan in
the state of New York. Considering that it is unfeasible to survey the
population, the analyst surveys enough people for it to be a representative
sample.
Which data integrity concept does this describe?
Answer:
Sampling
, Question:
What is a valid data constraint for a column containing dates to ensure
integrity?
Answer:
Format
Question:
An analyst is expected to map the location of all stores in a company retail
network based on data from the sales team.
Which field's data integrity check is relevant to this task?
Answer:
Store address
Question:
An analyst entering recently paid invoices into an accounting system skips the
decimal values of the amount paid.
Which type of dirty data does this scenario present?
Answer:
Incorrect data
