A Relation That Does Not Contain Any Repeating Groups Is

question 20

Multiple Choice

A relation that does not contain any repeating groups is in _____.

• A) first normal form
• B) second normal form
• C) third normal form
• D) Boyce-Codd normal form

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, representing an average distance from the mean.

Mean

The average value obtained by adding all the data points in a set together and then dividing by the number of data points.

Standard Normal Curve

A symmetric bell-shaped curve that represents the distribution of many types of data where the mean is 0 and the standard deviation is 1.

Z-score

An index quantifying the position of a value relative to the average value in a dataset, expressed as the amount of standard deviations away from this mean.