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What an outlier?


A) Processes and manages algorithms across many machines in a computing environment
B) A data value that is numerically distant from most of the other data points in a set of data
C) Occurs when the user goes into an emotional state of over-analysis (or over-thinking) a situation so that a decision or action is never taken,in effect paralyzing the outcome
D) The application of Big Data analytics to smaller data sets in near-real or real-time in order to solve a problem or create business value

E) A) and B)
F) A) and C)

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Dirty data is erroneous or flawed data.

A) True
B) False

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Data-mining tools use a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making.

A) True
B) False

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What is a data artist?


A) Processes and manages algorithms across many machines in a computing environment
B) Focuses on forecasting future trends and producing insights using sophisticated quantitative methods,including statistics,descriptive and predictive data mining,simulation,and optimization
C) Occurs when the user goes into an emotional state of over-analysis (or over-thinking) a situation so that a decision or action is never taken,in effect paralyzing the outcome
D) A business analytics specialist who uses visual tools to help people understand complex data

E) All of the above
F) A) and B)

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Duplicate data,inaccurate data,misleading data,and incorrect data are all problems associated with dirty data.

A) True
B) False

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A data point is an individual item on a graph or chart.

A) True
B) False

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Which of the following is a business-critical integrity constraint?


A) System will not allow an entry for an order for a nonexistent customer.
B) System will not allow returns of fresh produce after 15 days past delivery.
C) System will not allow shipping a product to a customer who does not have a valid address.
D) Systems will not allow shipping of a nonexistent product to a customer.

E) A) and B)
F) A) and C)

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What is the term for the management and oversight of an organization's data assets to help provide business users with high-quality data that is easily accessible in a consistent manner?


A) Data steward
B) Data stewardship
C) Data gap analysis
D) Data governance

E) B) and C)
F) All of the above

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Many firms complete data quality audits to determine the accuracy and completeness of its data.

A) True
B) False

Correct Answer

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Business intelligence can provide managers with the ability to make better decisions.Which of the following is not an example of how different industries use business intelligence?


A) Analyze popular vacation locations with current flight listings
B) Understand customer credit card usage and nonpayment rates
C) Compare the demographics of patients with critical illnesses
D) All of these choices are examples of how industries use business intelligence.

E) C) and D)
F) B) and D)

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What is data latency?


A) The time it takes for data to be stored or retrieved
B) The management and oversight of an organization's data assets
C) The person responsible for ensuring policies and procedures are implemented across the organization
D) When a company examines its data to determine if it can meet business expectations,while identifying possible data gaps

E) A) and B)
F) A) and C)

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Which of the following is correct in reference to a database?


A) A database can support only one logical view.
B) A database can support many physical views.
C) A database can support many logical views.
D) A database can support up to three logical views.

E) C) and D)
F) All of the above

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The example the book gave of www.EllisIsland.org,which generates more than 2.5 billion hits,is a site that offers a database that can easily adjust to handle massive volumes of information.What is this an example of?


A) Increased scalability and performance
B) Increased information security
C) Reduced information redundancy
D) Increased flexibility

E) B) and C)
F) None of the above

Correct Answer

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Which of the following occurs when a system produces incorrect,inconsistent,or duplicate data?


A) Information inconsistency issue
B) Information integrity issue
C) Data control issue
D) Data mining issue

E) All of the above
F) A) and D)

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Which of the following focuses on how individual users logically access information to meet their own particular business needs?


A) Physical view
B) Logical view
C) Data mart view
D) Data view

E) A) and B)
F) A) and C)

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A data map is a technique for establishing a match,or balance,between the source data and the target data warehouse.

A) True
B) False

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Information cleansing or scrubbing is a process that weeds out and fixes or discards inconsistent,incorrect,or incomplete information.

A) True
B) False

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The logical view of information focuses on how individual users logically access information to meet their own particular business needs.

A) True
B) False

Correct Answer

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Ben works at a top accounting firm in Salt Lake City,and his responsibilities include developing reports for each salesperson,product,and part as well as departmental-wide sales reports by salesperson,product,and part.Ben's duties provide value-added to his company and would be categorized as occurring at the different information _____________.


A) levels
B) formats
C) granularities
D) focus

E) B) and C)
F) A) and B)

Correct Answer

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What do data warehouses support?


A) OLAP
B) Analytical processing
C) OLTP
D) OLAP and analytical processing

E) A) and D)
F) B) and D)

Correct Answer

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Showing 441 - 460 of 469

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