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The curse of dimensionality states that the more attributes there are,the more difficult it is to build a model that fits the sample data,but that is more relevant as a predictor.

A) True
B) False

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With ________ data mining,data miners develop a model prior to the analysis and apply statistical techniques to data to estimate parameters of the model.


A) sequential
B) supervised
C) nonsequential
D) unsupervised

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

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If the granularity is too coarse,the data can be separated into constituent parts.

A) True
B) False

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Data granularity refers to the level of detail represented by the data.

A) True
B) False

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________ refers to the level of detail represented by the data.


A) Abstraction
B) Granularity
C) Dimensionality
D) Aggregation

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

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It is economical to create,staff,and operate data warehouses and data marts.

A) True
B) False

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Which of the following is true of data with granularity?


A) Granularity refers to the level of detail represented by the data.
B) If the granularity is too coarse,the data can be made finer by summing and combining.
C) The granularity in clickstream data is too coarse.
D) If the granularity is too coarse,the data can be separated into constituent parts.

E) None of the above
F) A) and D)

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________ reports are reports produced when something out of predefined bounds occurs.


A) Exception
B) Static
C) Dynamic
D) Informal

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

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Users in the data mart obtain data that pertain to a particular business function from the data warehouse.

A) True
B) False

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The facts about data,such as its source,format,assumptions,constraints,and the like are called ________.


A) metadata
B) data structures
C) microdata
D) data packets

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

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Which of the following problems is particularly common for data that have been gathered over time?


A) wrong granularity
B) nonintegration
C) inconsistency
D) missing values

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

Correct Answer

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In ________,statistical techniques identify groups of entities that have similar characteristics.


A) cluster analysis
B) content indexing
C) regression analysis
D) cloud computing

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

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Business intelligence systems are information systems that process operational and other data to analyze past performance and to make predictions.

A) True
B) False

Correct Answer

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The facts about data,such as its source,format,assumptions,constraints,and the like are called metadata.

A) True
B) False

Correct Answer

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Which of the following activities in the business intelligence process involves delivering business intelligence to the knowledge workers who need it?


A) data acquisition
B) business intelligence analysis
C) results publishing
D) problem solving

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

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Which of the following is true of unsupervised data mining?


A) Analysts apply data mining techniques to the data and observe the results.
B) Analysts apply statistical techniques to data to estimate parameters of a model.
C) Analysts use tools such as regression analysis.
D) Data miners develop a model prior to the analysis.

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

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For dynamic content,the skill required to create a publishing application is low.

A) True
B) False

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Differentiate between static reports and dynamic reports.

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Static reports are business intelligence...

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What are business intelligence systems?

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Business intelligence (BI)systems are in...

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A printed sales analysis is an example of a dynamic report.

A) True
B) False

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