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| Section | Objectives |
|---|---|
| Decision Making Models | - Risk and uncertainty in decision-making - Decision trees and expected value analysis |
| Probability and Statistical Inference | - Sampling methods and sampling error - Probability concepts and distributions |
| Hypothesis Testing | - t-tests, chi-square tests, and significance testing - Null and alternative hypotheses |
| 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) |
>> Data-Driven-Decision-Making試験対策 <<
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質問 # 122
An organization develops a new strategic plan and seeks ways to improve process performance by reducing variation to only 3.4 defects per million process outputs.
Which tool can the organization use to meet this goal?
正解：D
解説：
Six Sigmais specifically designed to reduce process variation to3.4 defects per million opportunities, making it the correct tool for achieving this goal. In data-driven decision making, Six Sigma provides a structured methodology (DMAIC) for defining problems, measuring performance, analyzing root causes, improving processes, and controlling future outcomes.
Statistical process control supports monitoring, but Six Sigma integrates SPC with strategic improvement initiatives. Linear programming optimizes resource allocation, and just-in-time focuses on inventory efficiency rather than defect reduction.
Therefore, the correct answer isD, Six Sigma.
質問 # 123
A professional services firm is undergoing a business process improvement exercise to improve productivity, staff morale, and client satisfaction while also thinking about the overall long-term financial performance of the company.
Which performance tool would best meet this firm's objectives?
正解：A
解説：
Thebalanced scorecardis the most appropriate performance tool for this scenario because it integrates financial and nonfinancial performance measuresinto a single framework. In data-driven decision making, the balanced scorecard supports a holistic view of organizational performance.
The firm's objectives include productivity (internal processes), staff morale (learning and growth), client satisfaction (customer perspective), and long-term financial performance (financial perspective). The balanced scorecard explicitly incorporates all these dimensions, ensuring alignment between strategic goals and operational execution.
Net promoter score focuses only on customer loyalty, results-based management emphasizes outcomes but lacks multi-perspective integration, and KPI dashboards may display metrics but do not inherently provide strategic balance.
Therefore, the correct answer isC, balanced scorecard.
質問 # 124
How should Ishikawa's seven basic tools of quality be used?
Choose 2 answers.
正解：B、D
解説：
Ishikawa's seven basic tools of quality are designed to support practical problem-solving and continuous improvement across all levels of an organization. These tools are most effective when used in combination and when the output from one tool serves as the input for another. For example, a check sheet can be used to collect defect data, which can then be summarized in a Pareto chart, and the findings may later be explored further with a cause-and-effect diagram. This interconnected use is one of the reasons the tools are so widely valued in quality management. The statement that the tools should only be used by high-level managers is incorrect because one of their strengths is accessibility; they are intended to be understandable and usable by ordinary workers as well as supervisors and analysts. The statement about recognizing trends within only one graph is also too restrictive and does not describe the broader practical use of the tools. Therefore, the correct answers are that the output from one tool can become another tool's input and that the tools can be used together.
質問 # 125
A manager has been assigned to manage a digital marketing analytics team. The manager tasks the team with determining similarities among existing customers in the company's database, such as similarities in products purchased, location, and the average amount spent per order among existing customers.
Which type of activity will help the team accomplish this task?
正解：C
解説：
Data miningis the appropriate activity for identifying patterns, similarities, and relationships within large datasets. In data-driven decision making, data mining techniques such as clustering and association analysis are commonly used to segment customers based on behavior and characteristics.
The task described involves uncovering hidden patterns across multiple variables, which aligns directly with data mining objectives. Linear programming focuses on optimization, regression predicts outcomes, and touchpoint analysis examines customer interactions rather than similarities.
Therefore, the correct answer isA, data mining.
質問 # 126
What is the primary goal of Six Sigma?
正解：B
解説：
The primary goal ofSix Sigmais tofoster a commitment to continuous improvementby systematically reducing defects and process variation. In data-driven decision making, Six Sigma uses statistical methods to improve quality, efficiency, and consistency across organizational processes.
Six Sigma emphasizes disciplined problem-solving through data analysis, root-cause identification, and process control. While reducing defects to 3.4 per million opportunities is a hallmark metric, the broader objective is embedding continuous improvement into organizational culture.
SIPOC is a supporting tool, leadership is a contributing factor, and collaborative planning forecasting and replenishment relates to supply chain management, not Six Sigma's core purpose.
Therefore, the correct answer isD.
質問 # 127
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