BIS Practice Problems 9

25) 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.

A) Analysts apply data mining techniques to the data and observe the results.

30) Which of the following is true of BigData? A) BigData refers to data sets that are at least a petabyte in size. B) BigData has low velocity, meaning that it is generated slowly. C) BigData can be processed using traditional techniques. D) BigData analysis does not involve reporting and data mining techniques.

A) BigData refers to data sets that are at least a petabyte in size.

22) ________ reports are reports produced when something out of predefined bounds occurs. A) Exception B) Static C) Dynamic D) Informal

A) Exception

13) 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.

A) Granularity refers to the level of detail represented by the data.

6) ________ publishing delivers business intelligence to users without any request from the users. A) Push B) Pull C) Direct D) Indirect

A) Push

2) Which of the following is true of business intelligence systems? A) The business intelligence application processes the data to produce business intelligence for use by knowledge workers. B) Business intelligence is not applicable during project management. C) The software component of a business intelligence system is called a business intelligence database. D) The organization's own operational databases cannot be the source data for a business intelligence system.

A) The business intelligence application processes the data to produce business intelligence for use by knowledge workers

18) Which of the following is true of data warehouses? A) The data warehouse takes data from the data producers for distribution. B) It is economical to create, staff, and operate data warehouses. C) Users in the data warehouse obtain data that pertain to a particular business function from the data mart. D) People working with a data warehouse are experts in a given business function

A) The data warehouse takes data from the data producers for distribution.

26) In ________, statistical techniques identify groups of entities that have similar characteristics. A) cluster analysis B) content indexing C) regression analysis D) cloud computing

A) cluster analysis

15) A ________ is a data collection that addresses the needs of a particular department or functional area of the business. A) data mart B) data center C) data mine D) data warehouse

A) data mart

9) 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

A) metadata

33) For business intelligence results to have value, they must ________. A) publish the information to the right user at the right time B) discover patterns and relationships in data to predict future outcomes C) foster innovation and improve customer service D) encode, save, and process expert knowledge

A) publish the information to the right user at the right time

12) ________ refers to the level of detail represented by the data. A) Abstraction B) Granularity C) Dimensionality D) Aggregation

B) Granularity

36) Which of the following is true of business intelligence publishing alternatives? A) Pull options vary between different server types, such as Web servers and business intelligence servers. B) Publishing dynamic business intelligence requires the publisher to set up database access when documents are consumed. C) For static content, the skill required to create a publishing application is high. D) For Web servers, the push options are manual.

B) Publishing dynamic business intelligence requires the publisher to set up database access when documents are consumed.

7) ________ publishing requires the user to request business intelligence results. A) Push B) Pull C) Direct D) Indirect

B) Pull

20) ________ data is data in the form of rows and columns. A) Granulated B) Structured C) Integrated D) Problematic

B) Structured

4) Which of the following activities in the business intelligence process involves creating business intelligence? A) data acquisition B) business intelligence analysis C) results publishing D) problem solving

B) business intelligence analysis

27) 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

B) supervised

14) The more attributes there are, the easier it is to build a model that fits the sample data, but that is worthless as a predictor. Which of the following best explains this phenomenon? A) the free rider problem B) the curse of dimensionality C) the tragedy of the commons D) the zero-sum game

B) the curse of dimensionality

1) ________ systems are information systems that process operational and other data to analyze past performance, and to make predictions. A) Enterprise planning B) Data mining C) Business intelligence D) Internal communication

C) Business intelligence

23) ________ is the application of statistical techniques to find patterns and relationships among data for classification and prediction. A) Data encryption B) Data warehousing C) Data mining D) Data integration

C) Data mining

24) ________ techniques emerged from the combined discipline of statistics, mathematics, artificial intelligence and machine-learning. A) Data encryption B) Data warehousing C) Data mining D) Data integration

C) Data mining

32) The results generated by BigData processors are combined in what is referred to as the ________ phase. A) Process B) Control C) Reduce D) Construct

C) Reduce

34) ________ reports are business intelligence documents that are fixed at the time of creation and do not change. A) Informal B) Extension C) Static D) Stable

C) Static

8) A ________ is a facility for managing an organization's business intelligence data. A) database B) data system C) data warehouse D) data structure

C) data warehouse

28) Regression analysis is used in ________. A) expert systems B) knowledge management systems C) data-mining systems D) reporting systems

C) data-mining systems

11) 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

C) inconsistency

21) The goal of ________ is to create information about past performance. A) data integration B) data mining analysis C) reporting D) BigData

C) reporting

5) 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

C) results publishing

35) ________ reports are business intelligence documents that are updated at the time they are requested. A) Informal B) Extension C) Static D) Dynamic

D) Dynamic

31) When the BigData collection is broken into pieces, and hundreds or thousands of independent processors search these pieces for something of interest, the process is referred to as the ________ phase. A) Crash B) Control C) Reduce D) Map

D) Map

19) ________ is the process of sorting, grouping, summing, filtering, and formatting structured data. A) Knowledge management B) Data mining analysis C) Cloud computing D) Reporting analysis

D) Reporting analysis

3) Data ________ is the process of obtaining, cleaning, organizing, relating, and cataloging source data. A) interpretation B) application C) retention D) acquisition

D) acquisition

16) The purpose of a ________ is to extract and clean data from operational systems and other sources, and to store and catalog that data for processing by business intelligence tools. A) data harvester B) data center C) data aggregator D) data warehouse

D) data warehouse

17) The users in the data mart obtain data that pertain to a particular business function from the ________. A) data harvester B) data center C) data aggregator D) data warehouse

D) data warehouse

10) Problematic data are termed ________. A) rough data B) clickstream data C) granular data D) dirty data

D) dirty data

37) The ________ function of business intelligence servers maintains metadata about the authorized allocation of business intelligence results to users. A) controlling B) processing C) delivery D) management

D) management

29) In ________, the impact of a set of variables on another variable is measured. A) cluster analysis B) context indexing C) cloud computing D) regression analysis

D) regression analysis

Business intelligence is not applicable during project management.

False

Data marts are usually larger than data warehouses.

False

Data mining analyses are used to create information about past performance, whereas reporting analysis is used primarily for classifying and predicting.

False

Data retention is the process of obtaining, cleaning, organizing, relating, and cataloging source data.

False

Data warehouses cannot purchase external data from outside resources.

False

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

False

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

False

Pull publishing delivers business intelligence to users without any request from the users.

False

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.

False

The granularity in clickstream data is too coarse.

False

The people who work with a data warehouse are experts in a given business function.

False

The software component of a business intelligence system is called a business intelligence database.

False

A data warehouse is a facility for managing an organization's business intelligence data

True

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

True

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

True

Data marts are data collections that address the needs of a particular department or functional area of the business.

True

Problematic data are termed dirty data.

True

Publish results is the process of delivering business intelligence to the knowledge workers who need it.

True

Structured data is data in the form of rows and columns.

True

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

True

The source data for a business intelligence system can be the data that the organization purchases from data vendors.

True

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

True

With unsupervised data mining, analysts do not create a model or hypothesis before running the analysis.

True