An Identifier Is an Attribute or a Group of Attributes

question 20

True/False

An identifier is an attribute or a group of attributes whose value is associated with one and only one entity instance.

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Definitions:

Type II Error

The error that occurs when the null hypothesis is not rejected when it is actually false, also known as a "false negative".

Sample Size

The number of observations or units chosen from a population for the purpose of statistical analysis.

Lowering Alpha

Reducing the alpha level, or the threshold of significance, to decrease the probability of committing a type I error in hypothesis testing.

Type I Error

A statistical error occurring when a true null hypothesis is incorrectly rejected.