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35 Cards in this Set
- Front
- Back
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___________________is information containing patterns, relationships, and trends
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Business intelligence
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One _____________is equal to 10^3 bytes
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Kilobyte
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A type written page is about 2 _______________
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Kilobytes
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A __________ conists of 10^15 bytes
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petabyte
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One _________is equal to 10^18 bytes
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exabyte
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_________systems integrate data from multiple sources, and they process that data by sorting, grouping, summing, averaging, and comparing.
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Reporting
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Reporting systems improve decision making by ______________________________________________
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providing the right information to the right user at the right time
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Decision tree analysis is a technique used by _______________ systems.
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data-mining
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___________systems improve decision making by using the discovered patterns and relationships to anticipate events or to predict future outcomes.
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Data-mining
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________________computes the correlation of items on past orders to determine items that are frequently purchased together.
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Market-basket analysis
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The advantage that ___________________have over the other systems is that these foster innovation, improve customer service, increase organizational responsiveness, and reduce costs.
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knowledge management systems
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Which of the following systems use if/then rules?
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Expert systems
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If patient_Temperature > 103, Then Initiate High_Fever-Procedure. This sort of a rule is most likely to be found in an ___________ system.
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Expert
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Problematic data are termed as ______________
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dirty data
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WhyMe@GuessWhoIAM.org is an example of _____________________
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dirty data
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Which of the following is a problem commonly associated with operational data that have been gathered over time?
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Inconsistent
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______________________refers to the degree of summarization or detail.
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Data granularity
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___________ data is highly summarized.
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Coarse
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Clickstream data is _____________
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too fine
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Generally, it is better to have data that is ___________ than data that is ___________
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too fine, too coarse
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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?
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The curse of dimensionality
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A ________________ is a company that obtains data from public and private sources and stores, combines, and publishes it in sophisticated ways.
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data aggregator
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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 BI tools.
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data warehouse
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Which of the following is true for data warehouses?
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Data are stored in a data warehouse database using a data warehouse DBMS
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The facts data, such as its source, format, assumptions, constraints, and the like, are called______________________
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metadata
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A_______________is a data collection that is created to address the needs of a particular business
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data mart
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___________________are comparable to distributors in a supply chain because they take data from the data manufacturers, clean and process the data, and locate the data on the disks of its computers
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Data warehouses
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_______________is the application of statistical techniques to find patterns and relationships among data and to classify and predict.
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Data mining
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Which term is used as a synonym for data mining?
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Knowledge discovery in databases
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In _____________, statistical techniques identify groups of entities that have similar characteristics.
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cluster analysis
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_______________________is a common unsupervised data-mining technique.
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Cluster analysis
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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.
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supervised
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Regression analysis is used in __________________
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data-mining systems
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___________________measures the impact of a set of variables on another variable.
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Regression analysis
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_____________________are a data-mining technique used to predict values and make classifications, such as "good prospect" or "poor prospect" customers
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Neural networks
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