A _____ Provides a Means to Store and Retrieve Data

question 51

Short Answer

A _____ provides a means to store and retrieve data that is modeled using some means other than the simple two-dimensional tabular relations used in relational databases.

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Definitions:

Standard Error

The standard deviation of the sampling distribution of a statistic, typically the mean, reflecting the variation of the sampling statistic over different samples.

Mean

The arithmetic average of a set of numbers, obtained by dividing the sum of these numbers by their quantity.

Z-statistic

A statistic used to determine the difference between an observed statistic and its hypothesized population parameter, measured in units of the standard deviation.

Two-tailed Test

A statistical test hypothesis that allows for the possibility of an effect in two directions, either greater than or less than.