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WGU VPC2Data-Driven Decision MakingC207 Sample Questions:

1. A nonprofit organization ran a fundraiser and would like to determine the amount of a typical donation.
Which statistic is less affected by outliers and skewed data and should be used to determine the amount of a typical donation?

A) Mode
B) Z-score
C) Median
D) Mean

2. An analyst used multiple linear regression to show how a big box store's sales (y) are predicted by the big box store's advertising expenditure in dollars (variable x1) and the advertising expenditure in dollars of a specialty store (variable x2) in the same market. The estimated regression is y = 651.57 + 92.30x1 # 26.89x2. How are advertising expenditures and sales related in this scenario?

A) If the big box store increases its advertising expenditures, its sales will decrease.
B) If the big box store decreases its advertising expenditures, it will decrease the big box store's sales.
C) If the big box store decreases its advertising expenditures, its sales will increase.
D) If the specialty store increases its advertising expenditures, it will decrease the big box store's sales.

3. Which process is designed to proactively prevent a problem?

A) Quality assurance
B) Common cause variation activity
C) Quality control
D) Plan-do-check-act activity

4. Which type of analytics classification uses experimental design and optimization to suggest a course of action?

A) Predictive analytics
B) Diagnostic analytics
C) Prescriptive analytics
D) Descriptive analytics

5. Which graphical display is used to examine the distribution of a data set with quartiles?

A) Scatterplot
B) Pareto chart
C) Boxplot
D) Bivariate chart

Solutions: