MIS Final Review Chapter 9 – Flashcards
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A ______ is a facility for managing an organization's business intelligence data.
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data warehouse
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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. T/F
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False
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______ requires users to request business intelligence results.
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Pull publishing
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The use of an organization's operational data as the source data for a business intelligence system is not usually recommended because it _______.
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requires considerable processing and can drastically reduce system performance
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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?
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the curse of dimensionality
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Project management is one of the few domains in which business intelligence is rarely used. T/F
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False
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______ refers to the level of detail represented by data.
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Granularity
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_____ are reports produced when something out of predefined bounds occurs.
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Exception reports
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MapReduce is a technique for harnessing the power of thousands of computers working in parallel. T/F
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True
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The goal of _______, a type of business intelligence analysis, is to create information about past performance.
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reporting analyses
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Users in a data mart obtain data that pertain to a particular business function from a data warehouse. T/F
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True
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BI analysis is the process of obtaining, cleaning, organizing, relating, and cataloging source data. T/F
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False
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The purchasing pattern of an individual never change. T/F
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False
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________ is the process of sorting, grouping summing, filtering, and formatting structured data.
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reporting analysis
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Static reports are business intelligence documents that are updated at the time they are requested. T/F
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False
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Regression analysis is used to identify groups of entities that have similar characterisitcs. T/F
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false
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BigData refers to data that have great variety and may have structured data as well as different formats. T/F
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True
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An advantage of data warehouses is the low cost required to create, staff, and operate them. T/F
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False
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Which is the following statement is true of a data warehouse?
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A data warehouse is larger than a data mart.
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Which of the following statements is true of data with granularity?
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It can be too fine or too coarse and also have wrong granularity.
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The three fundamental categories of BI analysis are reporting, data mining, and BigData. T/F
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True
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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?
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publish results
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_______ is used to measure the impact of a set of variables on another variable during data mining.
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Regression analysis
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Reporting analysis is used primarily for classifying and predicting BI data. T/F
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False
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BigData has volume, velocity, and variation characteristics that far exceed those of traditional reporting and data mining. T/F
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True
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Which of the following statements is true of Hadoop?
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Hadoop is an open source program that implements MapReduce
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The skills required to create a publishing application for dynamic content are low. T/F
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False
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As information systems, BI systems have three standard components. T/F
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False
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_______ techniques emerged from the combined discipline of statistics, mathematics, artificial intelligence, and machine-learning.
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Data mining
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If the granularity of certain data is too coarse, the data can be separated into constituent parts using statistical techniques. T/F
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False
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______ is an open source program supported by Apache Foundation that manages thousands of computers and that implements MapReduce.
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Hadoop
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Data marts are usually larger than data warehouses. T/F
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False
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Which of the following problems is particularly common for data that have been gathered over time?
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lack of consistency
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Problematic data are termed _______.
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dirty data
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A _______ is a data collection, smaller than the data warehouse that addresses the needs of a particular department or functional area of a business.
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data mart
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The management function of BI servers maintains metadata about the authorized allocation of BI results to users. T/F
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True
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Which of the following statements is true of unsupervised data mining?
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Analysts create hypotheses only after performing an analysis.
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A printed sales analysis is an example of a dynamic report. T/F
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False
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_______ is the process of delivering business intelligence to users without any request from the users.
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Push publishing
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In the ____ phase, a BigData collection is broken into pieces and hundreds or thousands of independent processors search these pieces for something of interest.
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map
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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.
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supervised data mining
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Push options are manual when emails or collaboration tools are used for BI publishing. T/F
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True
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______ is the application of statistical techniques to find patterns and relationships among data for classification and prediction.
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Data mining
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______ is the process of obtaining, cleaning, organizing, relating, and cataloging source data.
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Data acquisition
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The data that an organization purchases from data vendors can act as the source data for a business intelligence system. T/F
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True
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The results generated in the map phase are combined in the _______ phase.
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reduce
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Which of the following is a fundamental category of business intelligence analysis?
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reporting
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With unsupervised data mining, analysts do not create a model or hypothesis before running the analysis. T/F
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True
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Problem solving requires project management. T/F
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False
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Placing business intelligence applications on operational servers can dramatically reduce system performance. T/F
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True
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Users in a data mart obtain data that pertain to a particular business function from a ________.
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data warehouse
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The patterns, relationships, and trends identified by BI systems are called business intelligence. T/F
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True
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_______ are user requests for particular business intelligence results on a particular schedule or in response to particular events.
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Subscriptions
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Data analysts who work with data warehouses are experts at data management, data cleaning, data transformation, and data relationships. T/F
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True
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______ is an unsupervised data mining technique in which statistical identify groups of entities that have similar characteristics.
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cluster analysis
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Plush publishing requires a user to request BI results. T/F
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False
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External data purchased from outside resources are not includes in data warehouses. T/F
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False
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Structured data is data in the form of rows and columns. T/F
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True
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A data warehouse is a facility for managing an organization's business intelligence data. T/F
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True
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Which of the following statements is true of business intelligence systems?
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Business intelligence systems analyze an organization's past performance to make predictions.
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The source, format, assumptions and constraints, and other facts concerning certain data are called ______.
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metadata
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_____ are business intelligence documents that are fixed at the time of creation and do not change.
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Static reports
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Regression analysis is used in _____.
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supervised data mining
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_______ are business intelligence documents that are updated at the time they are requested.
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Dynamic reports
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_______process operational and other data in organizations to analyze past performance and make predictions.
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Business intelligence systems
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The granularity in clickstream data is too coarse. T/F
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False
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The ______ of business intelligence servers maintains metadata about the authorized allocation of business intelligence results to users.
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management function
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Data inconsistencies can occur from the nature of a business activity. T/F
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True
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Data granularity refers to the amount of data represented by data. T/F
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False
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Data marts are data collections that address the needs of a particular department or functional area of a business. T/F
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True
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BigData has low velocity and is generated slowly. T/F
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False
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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.
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data warehouse
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Cluster analysis measures the impact of a set of variables on another variable. T/F
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False
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