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WGU Data-Driven-Decision-Making Exam Syllabus Topics:

SectionWeightObjectives
Predictive Analytics & Regression20%- Interpreting coefficients, R-squared, significance
- Simple & multiple linear regression
- Forecasting & trend analysis
Decision Models & Prescriptive Analytics15%- Optimization, sensitivity analysis
- Decision trees, payoff matrices, expected value
- Quality & process improvement tools
Foundations of Data-Driven Decision Making20%- Role of data in business decisions
- Types of analytics: descriptive, predictive, prescriptive
- Ethics, privacy, and data governance
Statistical Concepts & Descriptive Analytics25%- Measures of central tendency, dispersion, distribution
- Data types, measurement scales, sampling methods
- Data visualization: charts, graphs, dashboards
Probability & Statistical Inference20%- Probability rules, distributions, expected value
- Hypothesis testing, p-values, confidence intervals
- Correlation vs. causation

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WGU VPC2Data-Driven Decision MakingC207 Data-Driven-Decision-Making Prüfungsfragen mit Lösungen (Q82-Q87):

82. Frage
Which element is associated with control charts?

Antwort: D

Begründung:
Control charts are a core tool in statistical process control and are used to monitor variation in a process over time. One of their defining features is the inclusion of upper and lower control limits. These limits help determine whether process variation is consistent with common-cause variation or whether unusual, assignable causes may be affecting performance. The chart typically includes a center line representing the process average, along with upper and lower limits that establish the acceptable range of variation under stable conditions. When points fall outside these limits or show nonrandom patterns, the process may require investigation. While hypothesis testing and correlation are important statistical concepts, they are not the primary identifying elements of a control chart. A reliability index may be used in certain engineering or quality contexts, but it is not the standard feature that defines control charts. Therefore, the element most directly associated with control charts is upper and lower limits, since those boundaries are central to evaluating whether a process remains in statistical control over time.


83. Frage
A patient satisfaction survey was conducted at Family Practice A. The average rating of online telemedicine visits was 4.5 out of 5, while in-person visits received a 3.0 out of 5.
Which samples should be used to compare the ratings?

Antwort: B

Begründung:
To make a valid comparison in data-driven decision making, samples must becomparable and drawn from the same population, differing only in the factor being evaluated. In this case, the goal is to compare patient satisfaction between online telemedicine visits and in-person visits atFamily Practice A.
Usingonline Family Practice A telemedicine visits and in-person Family Practice A visitsensures that both samples come from the same organization, patient base, and survey methodology. This controls for external factors such as practice standards, demographics, and survey design, allowing differences in ratings to be attributed to the visit type rather than unrelated variables.
Comparing total visits to only one visit type introduces imbalance. Including other family practices introduces external variation and invalidates the comparison. Data-driven decision making stresses consistency and relevance in sample selection to ensure accurate conclusions.
Therefore, the correct answer isD, as it uses comparable samples that isolate the variable of interest.


84. Frage
Which two types of graphs illustrate and analyze measurements or trends over time?
Choose 2 answers.

Antwort: B,C

Begründung:
The two graph types specifically designed to illustrate and analyze measurements or trends over time are the control chart and the run chart. A run chart displays data points in chronological order, making it useful for identifying trends, shifts, cycles, or patterns in a process over time. A control chart builds on this concept by adding upper and lower control limits, which help determine whether observed variation is normal or signals a possible process issue. These charts are widely used in quality improvement, operations monitoring, and time- based performance analysis. A check sheet is a structured data collection form, not a graph used to analyze trends over time. A Pareto chart shows categories ranked by frequency or impact, often to highlight the most important problems, but it does not primarily track change over time. Because the question asks for graph types that illustrate and analyze measurements or trends across time, the correct answers are control chart and run chart.


85. Frage
Why would a human resources department use both mean and median when doing a salary evaluation of a department?

Antwort: A

Begründung:
Using both mean and median helps identifyoutliers, such as very high executive salaries that skew the average. A large difference between the two indicates uneven distribution.
Thus, the correct answer isC.


86. Frage
How should a marketing consulting firm perform a cluster analysis for a new granola bar?

Antwort: C


87. Frage
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