question

Which of the following refers to data in the form of rows and columns?

answer

structured data

question

Which of the following statements is true of BigData?

answer

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

question

Which of the following statements is true of business intelligence publishing alternatives?

answer

It is more difficult publish dynamic BI than to publish static content.

question

The use of business intelligence for identifying changes in the purchasing patterns of customers is a labor-intensive process. T/F

answer

False

question

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

answer

data warehouse

question

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. T/F

answer

False

question

______ requires users to request business intelligence results.

answer

Pull publishing

question

The use of an organization's operational data as the source data for a business intelligence system is not usually recommended because it _______.

answer

requires considerable processing and can drastically reduce system performance

question

The attributes there are in a sample data, 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?

answer

the curse of dimensionality

question

Project management is one of the few domains in which business intelligence is rarely used. T/F

answer

False

question

______ refers to the level of detail represented by data.

answer

Granularity

question

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

answer

Exception reports

question

MapReduce is a technique for harnessing the power of thousands of computers working in parallel. T/F

answer

True

question

The goal of _______, a type of business intelligence analysis, is to create information about past performance.

answer

reporting analyses

question

Users in a data mart obtain data that pertain to a particular business function from a data warehouse. T/F

answer

True

question

BI analysis is the process of obtaining, cleaning, organizing, relating, and cataloging source data. T/F

answer

False

question

The purchasing pattern of an individual never change. T/F

answer

False

question

________ is the process of sorting, grouping summing, filtering, and formatting structured data.

answer

reporting analysis

question

Static reports are business intelligence documents that are updated at the time they are requested. T/F

answer

False

question

Regression analysis is used to identify groups of entities that have similar characterisitcs. T/F

answer

false

question

BigData refers to data that have great variety and may have structured data as well as different formats. T/F

answer

True

question

An advantage of data warehouses is the low cost required to create, staff, and operate them. T/F

answer

False

question

Which is the following statement is true of a data warehouse?

answer

A data warehouse is larger than a data mart.

question

Which of the following statements is true of data with granularity?

answer

It can be too fine or too coarse and also have wrong granularity.

question

The three fundamental categories of BI analysis are reporting, data mining, and BigData. T/F

answer

True

question

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

answer

publish results

question

_______ is used to measure the impact of a set of variables on another variable during data mining.

answer

Regression analysis

question

Reporting analysis is used primarily for classifying and predicting BI data. T/F

answer

False

question

BigData has volume, velocity, and variation characteristics that far exceed those of traditional reporting and data mining. T/F

answer

True

question

Which of the following statements is true of Hadoop?

answer

Hadoop is an open source program that implements MapReduce

question

The skills required to create a publishing application for dynamic content are low. T/F

answer

False

question

As information systems, BI systems have three standard components. T/F

answer

False

question

_______ techniques emerged from the combined discipline of statistics, mathematics, artificial intelligence, and machine-learning.

answer

Data mining

question

If the granularity of certain data is too coarse, the data can be separated into constituent parts using statistical techniques. T/F

answer

False

question

______ is an open source program supported by Apache Foundation that manages thousands of computers and that implements MapReduce.

answer

Hadoop

question

Data marts are usually larger than data warehouses. T/F

answer

False

question

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

answer

lack of consistency

question

Problematic data are termed _______.

answer

dirty data

question

A _______ is a data collection, smaller than the data warehouse that addresses the needs of a particular department or functional area of a business.

answer

data mart

question

The management function of BI servers maintains metadata about the authorized allocation of BI results to users. T/F

answer

True

question

Which of the following statements is true of unsupervised data mining?

answer

Analysts create hypotheses only after performing an analysis.

question

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

answer

False

question

_______ is the process of delivering business intelligence to users without any request from the users.

answer

Push publishing

question

In the ____ phase, a BigData collection is broken into pieces and hundreds or thousands of independent processors search these pieces for something of interest.

answer

map

question

In the case of ______, data miners develop models prior to conducting analyses and then apply statistical techniques to data to estimate parameters of the models.

answer

supervised data mining

question

Push options are manual when emails or collaboration tools are used for BI publishing. T/F

answer

True

question

______ is the application of statistical techniques to find patterns and relationships among data for classification and prediction.

answer

Data mining

question

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

answer

Data acquisition

question

The data that an organization purchases from data vendors can act as the source data for a business intelligence system. T/F

answer

True

question

The results generated in the map phase are combined in the _______ phase.

answer

reduce

question

Which of the following is a fundamental category of business intelligence analysis?

answer

reporting

question

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

answer

True

question

Problem solving requires project management. T/F

answer

False

question

Placing business intelligence applications on operational servers can dramatically reduce system performance. T/F

answer

True

question

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

answer

data warehouse

question

The patterns, relationships, and trends identified by BI systems are called business intelligence. T/F

answer

True

question

_______ are user requests for particular business intelligence results on a particular schedule or in response to particular events.

answer

Subscriptions

question

Data analysts who work with data warehouses are experts at data management, data cleaning, data transformation, and data relationships. T/F

answer

True

question

______ is an unsupervised data mining technique in which statistical identify groups of entities that have similar characteristics.

answer

cluster analysis

question

Plush publishing requires a user to request BI results. T/F

answer

False

question

External data purchased from outside resources are not includes in data warehouses. T/F

answer

False

question

Structured data is data in the form of rows and columns. T/F

answer

True

question

A data warehouse is a facility for managing an organization's business intelligence data. T/F

answer

True

question

Which of the following statements is true of business intelligence systems?

answer

Business intelligence systems analyze an organization's past performance to make predictions.

question

The source, format, assumptions and constraints, and other facts concerning certain data are called ______.

answer

metadata

question

_____ are business intelligence documents that are fixed at the time of creation and do not change.

answer

Static reports

question

Regression analysis is used in _____.

answer

supervised data mining

question

_______ are business intelligence documents that are updated at the time they are requested.

answer

Dynamic reports

question

_______process operational and other data in organizations to analyze past performance and make predictions.

answer

Business intelligence systems

question

The granularity in clickstream data is too coarse. T/F

answer

False

question

The ______ of business intelligence servers maintains metadata about the authorized allocation of business intelligence results to users.

answer

management function

question

Data inconsistencies can occur from the nature of a business activity. T/F

answer

True

question

Data granularity refers to the amount of data represented by data. T/F

answer

False

question

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

answer

True

question

BigData has low velocity and is generated slowly. T/F

answer

False

question

A _______ is designed to extract data from operational systems and other sources, clean the data, and store and catalog that data for processing by business intelligence tools.

answer

data warehouse

question

Cluster analysis measures the impact of a set of variables on another variable. T/F

answer

False

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