WGU C207 (VPC2)Data-Driven Decision Making Exam

1. Why is quantitative analysis important to decision-making?

• It creates a risk-management dashboard.
• It increases the experience of top management.
• It provides definable metric-analysis surveys.
• It examines and describes large sets of data.

2. Which statement reflects an analytical decision by a for-profit organization?

• Optimize profit using linear programming
• Optimize profit using hardware programming
• Optimize profit using social programming
• Optimize profit using software programming

3. Which analytics classification uses optimization to suggest actions?

• Predictive analytics
• Prescriptive analytics
• Descriptive analytics
• Diagnostic analytics

4. A master’s degree implies a bachelor’s degree. What type of data is this?

• Ratio data
• Nominal data
• Interval data
• Ordinal data

5. Which two characteristics ensure clean data?

• The age of the data does not matter.
• The data must be relevant.
• The data elements must be unique.
• The data cannot contain outliers.

6. Which two tools help detect out-of-range errors?

• Spreadsheets
• Relational databases
• Experimental studies
• Observational studies

7. What causes random errors?

• Respondents favoring outcomes
• Biased data
• Unpredictable fluctuations in readings
• Instrument needing calibration

8. Why use random sample populations?

• Software is expensive
• Ensures bias elimination
• Too many outliers in population
• Studying entire population is impractical

9. Which design eliminates placebo awareness bias?

• Time series study
• Observational study
• Prospective cohort study
• Blind study

10. What is true about outliers? (Choose 2)

• All should be eliminated.
• Useful to determine if something does not belong.
• All are statistically significant.
• Miskeyed outliers can be corrected.

11. Which samples compare telemedicine vs in-person visits?

• Online telemedicine and in-person visits at same practice
• Total visits and in-person visits
• Other practice online ratings
• Total visits and online visits

12. Measuring volume in metric units is what type of research?

• Quantitative research
• Development research
• Qualitative research
• Precision research

13. What is the median of 22,24,25,28,32,34,41,42,48,48,54?

• 25
• 34
• 41
• 48

14. Which element is associated with control charts?

• Upper and lower limits
• Correlation
• Reliability index
• Hypothesis testing

15. In regression, sales affected by signage represent what?

• Criterion variable
• Target variable
• Dependent variable
• Independent variable

16. 95% confidence in advertisement effectiveness indicates:

• 95% liked brand
• Ad increased sales
• 5% disliked ad
• Ad built brand awareness

17. Which statistic standardizes different datasets?

• Mode
• Median
• Z-score
• Variance

18. Average sales per day refers to:

• Median
• Distribution
• Mean
• Variance

19. 6 out of 8 centers US-based. Probability?

• 25%
• 33%
• 67%
• 75%

20. Which tests significant difference among three groups?

• ANOVA determines significant difference
• Determines which has most output
• Determines rate of production
• Determines reason for difference

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