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

Section	Weight	Objectives
Topic 1: Probability & Statistical Inference	20%	- Hypothesis testing, p-values, confidence intervals - Probability rules, distributions, expected value - Correlation vs. causation
Topic 2: Decision Models & Prescriptive Analytics	15%	- Optimization, sensitivity analysis - Decision trees, payoff matrices, expected value - Quality & process improvement tools
Topic 3: Predictive Analytics & Regression	20%	- Simple & multiple linear regression - Interpreting coefficients, R-squared, significance - Forecasting & trend analysis
Topic 4: Foundations of Data-Driven Decision Making	20%	- Role of data in business decisions - Ethics, privacy, and data governance - Types of analytics: descriptive, predictive, prescriptive
Topic 5: Statistical Concepts & Descriptive Analytics	25%	- Measures of central tendency, dispersion, distribution - Data visualization: charts, graphs, dashboards - Data types, measurement scales, sampling methods

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Data-Driven-Decision-Making시험유효덤프 - Data-Driven-Decision-Making최신버전 덤프문제

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최신 Courses and Certificates Data-Driven-Decision-Making 무료샘플문제 (Q56-Q61):

질문 # 56
Which step in the plan-do-check-act cycle is described as analyzing the results of an experiment and deciding whether those results can be improved?

A. Check
B. Act
C. Do
D. Plan

정답：A

설명：
TheCheckphase of the Plan-Do-Check-Act (PDCA) cycle involves evaluating outcomes and analyzing results. In data-driven decision making, this step compares actual performance against expected results to determine whether objectives were met.
During the Check phase, organizations review data, assess variation, and identify opportunities for improvement. Planning defines objectives, Doing implements changes, and Acting standardizes or adjusts processes based on evaluation.
Therefore, the correct answer isA, Check.

질문 # 57
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. The advertisement was effective in increasing sales.
B. The advertisement was effective in building brand awareness.
C. Five percent of the subjects did not like the advertisement.
D. Ninety-five percent of the subjects liked the brand.

정답：B

질문 # 58
Which two results occur when the null hypothesis is accepted using an F-test?
Choose 2 answers.

A. The test statistic is greater than the critical value.
B. The test statistic is less than the critical value.
C. There appears to be a difference between the two samples.
D. There appears to be no difference between the two samples.

정답：B,D

설명：
When the null hypothesis is accepted in anF-test, it indicates that there is no statistically significant difference between group variances or means, depending on the test design. Acceptance occurs when thetest statistic is less than the critical value, meaning the observed variation is within expected limits.
Accepting the null hypothesis implies thatno meaningful differenceexists between the samples. If the test statistic exceeded the critical value, the null hypothesis would be rejected.
Thus, the correct results areA and D.

질문 # 59
A company's marketing team tells an analyst that fewer customers are opening emails in the recent email campaign. The analyst interviews a few marketing coordinators and discovers changes were made to the email subject line between the earlier successful email campaign and the recent one. The analyst then uses a statistical technique to compare the email open rates for each campaign. Which step does the comparison of the email open rate represent in the plan-do-check-act cycle?

A. Check
B. Act
C. Do
D. Plan

정답：A

설명：
The plan-do-check-act cycle is a continuous improvement framework used in quality management and process improvement. In this scenario, the comparison of email open rates represents the check stage. After identifying a possible cause of the problem, the analyst uses a statistical technique to evaluate results and determine whether the changes in subject lines are associated with lower open rates. The check step is where performance is measured, reviewed, and compared against expectations or prior outcomes. The plan stage would involve deciding what change or test to make. The do stage would involve implementing the campaign or the revised subject line. The act stage would involve standardizing the successful change or making further adjustments based on the findings. Because the analyst is examining and comparing the results of the campaigns, this clearly aligns with the check phase. Therefore, the correct answer is check.

질문 # 60
The daily sales from a salon are normally distributed with a mean of $1,500 and a standard deviation of $250.
The salon owner notices that sales were $750 on a particular day.
Why should the owner be concerned about sales based on this scenario?

A. Sales of $750 are two standard deviations of the mean.
B. Sales of $750 are within three standard deviations of the mean.
C. Sales of $750 are outside three standard deviations of the mean.
D. Sales of $750 are within two standard deviations of the mean.

정답：C

설명：
In a normal distribution, most observations fall withinthree standard deviations of the mean. This principle is central to data-driven decision making and statistical process control. Values outside this range are considered highly unusual and may indicate an underlying problem.
Here, the mean is $1,500 and the standard deviation is $250. Three standard deviations below the mean equals
$750 ($1,500 # 3 × $250). Sales of exactly $750 fall at the extreme lower boundary, indicating an unusually low sales day.
Such an outcome signals a potential anomaly that warrants investigation, such as operational issues, staffing shortages, or external disruptions. Values this far from the mean occur very infrequently in normal conditions.
Therefore, the owner should be concerned because sales of $750 areoutside the typical operating range, making optionCthe correct answer.

질문 # 61
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