WGU D325 LESSON 14| PA|PRE-
ASSESSMENT| EXAM QUESTIONS AND
CORRECT ANSWERS|| GRADED A+||
LATEST UPDATE 2026
1. What is the primary goal of Lesson 14 in D325?
A. Data storage
B. Decision-making using data
C. Software installation
D. Network security
Correct Answer: B
Rationale: Lesson 14 focuses on applying data and analytics to support informed decision-
making.
2. Which tool is commonly used to visualize trends in data?
A. Firewall
B. Spreadsheet chart
C. Text editor
D. Compiler
Correct Answer: B
Rationale: Charts and graphs help identify patterns and trends in datasets.
3. What does PA stand for in WGU courses?
A. Performance Assessment
B. Pre-Assessment
C. Professional Analysis
D. Program Assignment
Correct Answer: B
Rationale: PA is a Pre-Assessment used to gauge readiness for the OA.
,4. Structured data is best described as:
A. Free-text data
B. Data stored in fixed formats
C. Image data
D. Audio recordings
Correct Answer: B
Rationale: Structured data follows a predefined schema, such as tables.
5. Which of the following is an example of unstructured data?
A. Excel spreadsheet
B. SQL table
C. Email text
D. CSV file
Correct Answer: C
Rationale: Emails are not stored in a predefined structure.
SECTION 2: Data Analysis & Interpretation
6. What is data normalization used for?
A. Increasing redundancy
B. Improving data consistency
C. Removing security
D. Slowing performance
Correct Answer: B
Rationale: Normalization reduces redundancy and improves data integrity.
7. Which metric measures central tendency?
A. Variance
B. Range
, C. Mean
D. Standard deviation
Correct Answer: C
Rationale: Mean is a measure of central tendency.
8. What does a high standard deviation indicate?
A. Data values are close together
B. Data values are widely spread
C. No variability
D. Invalid data
Correct Answer: B
Rationale: High deviation means more spread from the mean.
9. Which graph is best for comparing categories?
A. Line graph
B. Pie chart
C. Bar chart
D. Scatter plot
Correct Answer: C
Rationale: Bar charts clearly compare discrete categories.
10. What does correlation measure?
A. Data size
B. Relationship strength between variables
C. Data accuracy
D. Database speed
Correct Answer: B
Rationale: Correlation shows how two variables move in relation to each other.
SECTION 3: Decision-Making & Business Context
ASSESSMENT| EXAM QUESTIONS AND
CORRECT ANSWERS|| GRADED A+||
LATEST UPDATE 2026
1. What is the primary goal of Lesson 14 in D325?
A. Data storage
B. Decision-making using data
C. Software installation
D. Network security
Correct Answer: B
Rationale: Lesson 14 focuses on applying data and analytics to support informed decision-
making.
2. Which tool is commonly used to visualize trends in data?
A. Firewall
B. Spreadsheet chart
C. Text editor
D. Compiler
Correct Answer: B
Rationale: Charts and graphs help identify patterns and trends in datasets.
3. What does PA stand for in WGU courses?
A. Performance Assessment
B. Pre-Assessment
C. Professional Analysis
D. Program Assignment
Correct Answer: B
Rationale: PA is a Pre-Assessment used to gauge readiness for the OA.
,4. Structured data is best described as:
A. Free-text data
B. Data stored in fixed formats
C. Image data
D. Audio recordings
Correct Answer: B
Rationale: Structured data follows a predefined schema, such as tables.
5. Which of the following is an example of unstructured data?
A. Excel spreadsheet
B. SQL table
C. Email text
D. CSV file
Correct Answer: C
Rationale: Emails are not stored in a predefined structure.
SECTION 2: Data Analysis & Interpretation
6. What is data normalization used for?
A. Increasing redundancy
B. Improving data consistency
C. Removing security
D. Slowing performance
Correct Answer: B
Rationale: Normalization reduces redundancy and improves data integrity.
7. Which metric measures central tendency?
A. Variance
B. Range
, C. Mean
D. Standard deviation
Correct Answer: C
Rationale: Mean is a measure of central tendency.
8. What does a high standard deviation indicate?
A. Data values are close together
B. Data values are widely spread
C. No variability
D. Invalid data
Correct Answer: B
Rationale: High deviation means more spread from the mean.
9. Which graph is best for comparing categories?
A. Line graph
B. Pie chart
C. Bar chart
D. Scatter plot
Correct Answer: C
Rationale: Bar charts clearly compare discrete categories.
10. What does correlation measure?
A. Data size
B. Relationship strength between variables
C. Data accuracy
D. Database speed
Correct Answer: B
Rationale: Correlation shows how two variables move in relation to each other.
SECTION 3: Decision-Making & Business Context
