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WGU Data-Driven-Decision-Making Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hypothesis Testing | - Null and alternative hypotheses - t-tests, chi-square tests, and significance testing |
| Decision Making Models | - Decision trees and expected value analysis - Risk and uncertainty in decision-making |
| Regression and Correlation Analysis | - Interpreting correlation and causation - Linear regression modeling |
| Data Fundamentals and Business Analytics | - Data types and data collection methods - Descriptive statistics (mean, median, variance, standard deviation) |
| Probability and Statistical Inference | - Probability concepts and distributions - Sampling methods and sampling error |
WGU VPC2Data-Driven Decision MakingC207 Sample Questions:
Question 1
A researcher seeks to pass a bond issue and asks a sample of respondents who have a bachelor's degree if they are voting in favor of the bond because it would be beneficial to the county.
Which type of error does this represent?
A. Confusion of association and causality
B. Response bias
C. Faulty operationalization
D. Selection bias
Question 2
Which analytic used in healthcare is calculated as a proportion of new cases compared to person-time units?
A. Morbidity rate
B. Incidence rate
C. Prevalence
D. Cumulative incidence
Question 3
A researcher notes that people who exercise daily tend to sleep better. The researcher then asks subjects to keep a sleep diary and record the number of hours they sleep each night. Some diaries have few entries, but the subjects claim they are well rested. Which type of error is represented in this research?
A. Cause-and-effect confusion
B. Response bias
C. Conscious bias
D. Lack of blinding
Question 4
Research data indicate 95% confidence in a study in which subjects who were shown a product advertisement exhibited brand awareness compared to a control group who did not see the advertisement.
What can be concluded from this study?
A. Five percent of the subjects did not like the advertisement.
B. Ninety-five percent of the subjects liked the brand.
C. The advertisement was effective in building brand awareness.
D. The advertisement was effective in increasing sales.
Question 5
Which distribution would have a mean and median that are approximately equal after an analysis of each employee's number of customer service calls over the last month?
A. Pareto distribution
B. Bimodal distribution
C. Multimodal distribution
D. Normal distribution
Solutions:
| Question 1 Answer: D | Question 2 Answer: B | Question 3 Answer: B | Question 4 Answer: C | Question 5 Answer: D |
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