Explain Entity-Relationship (ER) Diagrams

question 26

Essay

Explain entity-relationship (ER) diagrams.

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Definitions:

Validity

How well a test measures what it says it does.

Predictive Validity

The extent to which a score on a scale or test predicts future performance on a related outcome.

Concurrent Validity

A measure of how well a particular test correlates with a previously validated measure taken at the same time.

Construct Validity

The extent to which a test measures the theoretical construct or concept it is intended to measure.