Which of the Following Definitions BEST Describes a Web Portal

question 15

Multiple Choice

Which of the following definitions BEST describes a Web portal?

• A) A site, such as Netvibes, that has the ability to search and gives users entry to various Web services
• B) A small search engine, such as Blackle, that is powered by a larger one
• C) A search engine, such as Yippy, that compiles the search results of multiple search sites
• D) A search engine, such as Leapfish, that sorts search results into categories

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Definitions:

Z-scores

Normalized values reflecting the distance of an element in terms of standard deviations from the mean.

Variable

A variable is an element, feature, or factor that is prone to vary or change, capable of taking on different values.

Normally Distributed

Describes a distribution that is symmetrical, with data that clusters around a central mean and tails that decrease towards the extremes.

Standard Deviation

A measure of the amount of variability or dispersion of a set of data values, illustrating how much individual data points deviate from the mean.