A Unique Identifier Is Most Likely Used as a ____

question 75

Multiple Choice

A unique identifier is most likely used as a ____ key in a database.

• A) special
• B) public
• C) static
• D) primary

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Definitions:

T-test

A statistical test used to compare the means of two groups or to compare a sample mean to a known value when variances are known or assumed to be equal.

Population Variances

Population variances measure the variability or spread of a population's data points from its mean, indicating how much the population data values differ from each other.

Ratio

A measure that compares two quantities by division.

Difference

The quantitative discrepancy or deviation between two values or sets of data.