A ____ Is an Attribute or Combination of Attributes That

question 14

Multiple Choice

A ____ is an attribute or combination of attributes that uniquely identifies a tuple.

• A)secondary key
• B)primary key
• C)foreign key
• D)preferred key

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Definitions:

Standard Deviation

A metric that quantifies how spread out data points are from the mean, showing the degree of variation or dispersion within a dataset.

Negative

In the context of numbers, denotes values less than zero; in the context of feedback or results, indicates adverse outcomes or deficit.

Population Variance

A measure that indicates the dispersion or spread of all values in a population, calculated as the average of the squared differences from the mean.

Symbols

Characters or marks used to represent objects, ideas, or actions within a particular context, such as mathematics, literature, or everyday life.