WGU D467 EXPLORING DATA | PA & OA |
250 UNIQUE PRACTICE QUESTIONS AND
ANSWERS WITH DETAILED RATIONALES
LATEST UPDATE 2026
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SECTION 1: DATA TYPES AND STRUCTURES (Questions 1-30)
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Question 1
What type of data is the height of a skyscraper?
A) Discrete
B) Categorical
C) Continuous
D) Ordinal
Correct Answer: C) Continuous
Rationale: Height is a continuous data type because it can take on any value within
a range and can be measured with increasing precision (e.g., 150.5 meters, 150.55
meters). Continuous data represents measurable quantities that can be infinitely
divided.
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Question 2
Fill in the blank: The number of stars awarded to a product review is an example of
_____ data.
A) Continuous
B) Qualitative
C) Discrete
D) Nominal
Correct Answer: C) Discrete
Rationale: Star ratings (1-5 stars) are discrete data because they can only take on
specific, countable values. Discrete data consists of whole numbers or distinct
categories that cannot be meaningfully subdivided.
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Question 3
When using long data, each subject has data in multiple rows. This is because each
row represents what?
A) One variable per subject
B) One observation per subject
C) One attribute per subject
,D) One record per subject
Correct Answer: B) One observation per subject
Rationale: In long data format, each row represents a single observation for a
subject, meaning a subject can appear across multiple rows if they have multiple
observations or measurements recorded over time.
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Question 4
In a data table, where are fields contained?
A) Rows
B) Cells
C) Columns
D) Tables
Correct Answer: C) Columns
Rationale: In structured databases and data tables, fields are contained in columns.
Each column represents a specific attribute or field, while each row contains a
record with values for each field.
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Question 5
, When discussing structured databases, data analysts refer to the data contained in a
row as a record. How do they refer to the data contained in a column?
A) Attribute
B) Field
C) Variable
D) Observation
Correct Answer: B) Field
Rationale: In structured databases, a row is called a record, and a column is called
a field. Fields represent specific attributes or characteristics of the data being
stored.
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Question 6
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of
value the data is.
A) Element
B) Field
C) Attribute
D) Variable
Correct Answer: C) Attribute
250 UNIQUE PRACTICE QUESTIONS AND
ANSWERS WITH DETAILED RATIONALES
LATEST UPDATE 2026
---
SECTION 1: DATA TYPES AND STRUCTURES (Questions 1-30)
---
Question 1
What type of data is the height of a skyscraper?
A) Discrete
B) Categorical
C) Continuous
D) Ordinal
Correct Answer: C) Continuous
Rationale: Height is a continuous data type because it can take on any value within
a range and can be measured with increasing precision (e.g., 150.5 meters, 150.55
meters). Continuous data represents measurable quantities that can be infinitely
divided.
,---
Question 2
Fill in the blank: The number of stars awarded to a product review is an example of
_____ data.
A) Continuous
B) Qualitative
C) Discrete
D) Nominal
Correct Answer: C) Discrete
Rationale: Star ratings (1-5 stars) are discrete data because they can only take on
specific, countable values. Discrete data consists of whole numbers or distinct
categories that cannot be meaningfully subdivided.
---
Question 3
When using long data, each subject has data in multiple rows. This is because each
row represents what?
A) One variable per subject
B) One observation per subject
C) One attribute per subject
,D) One record per subject
Correct Answer: B) One observation per subject
Rationale: In long data format, each row represents a single observation for a
subject, meaning a subject can appear across multiple rows if they have multiple
observations or measurements recorded over time.
---
Question 4
In a data table, where are fields contained?
A) Rows
B) Cells
C) Columns
D) Tables
Correct Answer: C) Columns
Rationale: In structured databases and data tables, fields are contained in columns.
Each column represents a specific attribute or field, while each row contains a
record with values for each field.
---
Question 5
, When discussing structured databases, data analysts refer to the data contained in a
row as a record. How do they refer to the data contained in a column?
A) Attribute
B) Field
C) Variable
D) Observation
Correct Answer: B) Field
Rationale: In structured databases, a row is called a record, and a column is called
a field. Fields represent specific attributes or characteristics of the data being
stored.
---
Question 6
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of
value the data is.
A) Element
B) Field
C) Attribute
D) Variable
Correct Answer: C) Attribute
