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| Section | Objectives |
|---|---|
| Data-Driven Culture and Communication | - Stakeholder Communication - Presenting Data Insights - Building Data-Informed Organizations - Ethical Considerations in Data Use |
| Business Intelligence and Analytics | - Data Mining Concepts - Dashboards and Reporting - Key Performance Indicators (KPIs) - Predictive Analytics Basics |
| Data Analysis Fundamentals | - Data Visualization Techniques - Descriptive Statistics - Data Quality and Cleaning - Data Types and Measurement Scales |
| Decision-Making Frameworks | - Cost-Benefit Analysis - Risk Analysis and Assessment - Evidence-Based Decision Making - Rational Decision Models |
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NEW QUESTION # 41
What does big data include?
Answer: B
Explanation:
Big data includes both structured and unstructured data. Structured data are organized in predefined formats such as rows and columns in databases, spreadsheets, or transaction systems. Unstructured data include forms such as emails, videos, social media content, images, audio files, sensor outputs, and free-text documents that do not fit neatly into traditional tabular formats. One of the defining features of big data is not just its size, but also its variety. This variety means organizations must work with multiple data types and sources to generate useful insights. The other options do not define what big data includes. Spreadsheets may handle small portions of data, but they do not define the concept itself. Powerful extraction tools may be used in big data environments, but they are tools rather than components of the data. Inferential statistics are analytical methods, not the data itself. Therefore, the best answer is that big data includes both structured and unstructured data.
NEW QUESTION # 42
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?
Answer: D
NEW QUESTION # 43
A political ballot gives voters the option to vote for one of three candidates. Eight voters cast their ballots.
Which statistical rule should be used to determine the possible voting outcomes?
Answer: D
Explanation:
Themultiplication principleis used to determine the number of possible outcomes when multiple independent choices occur in sequence. In data-driven decision making and probability theory, this rule applies when each event has a fixed number of outcomes and each outcome is independent of the others.
In this scenario, each of the eight voters can independently choose one of three candidates. The total number of possible voting outcomes is calculated by multiplying the number of choices available for each voter.
Because the voters act independently and order matters in counting outcomes, the multiplication principle is the correct method.
Conditional probability applies when outcomes depend on prior events, Bayes' theorem updates probabilities based on new information, and combinations are used when order does not matter. None of these fit the structure of this problem.
Therefore, the correct answer isA, multiplication principle.
NEW QUESTION # 44
Which process is designed to proactively prevent a problem?
Answer: B
Explanation:
Quality assurance is the process designed to proactively prevent problems before they occur. It focuses on improving the systems, procedures, and standards used to produce outcomes so that defects, errors, or failures are less likely to happen in the first place. This preventive orientation distinguishes quality assurance from quality control, which is more concerned with identifying defects after or during production through inspection and monitoring. Common cause variation refers to the natural variability present in a stable process and is not itself a preventive process. The plan-do-check-act cycle is a structured improvement framework, but it is broader and not the specific term used to describe proactive prevention. In data-driven decision- making and quality management, assurance activities often include standardizing procedures, training employees, documenting workflows, and building reliable systems that reduce variation and improve consistency. Because the question asks which process is specifically designed to act proactively, the best answer is quality assurance. It aims to stop issues before they occur, making it a preventive rather than reactive approach.
NEW QUESTION # 45
In an experimental study, researchers are testing a new flea preventive medication on dogs using a blind study. Dogs are treated with the new medication or with a placebo.
Who should know which dogs are given the medication or the placebo for this blind study?
Answer: A
Explanation:
In ablind study, the purpose is to reduce bias that may influence responses or outcomes. In data-driven decision making, a blind study is designed so thatsubjects and response gatherers do not knowwhich treatment is administered, while the researchers do retain this information to correctly manage and analyze the experiment.
In this scenario, dog owners and response gatherers should not know whether the dogs received the medication or a placebo, as this knowledge could influence reporting of outcomes or observations. However, researchers must know which treatment each dog receives to ensure proper administration, monitoring, and statistical analysis.
If neither researchers nor participants knew the assignments, the study would be classified as adouble-blind study, which is not stated here. Allowing owners or response gatherers to know treatment assignments would introduce bias and undermine experimental validity.
Therefore, in a blind study,only the researchersshould know which dogs received the medication or placebo, making optionCthe correct answer.
NEW QUESTION # 46
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