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What did the nomadic peoples do when they entered the Indus River valley?
Error Score
The difference between observed scores and the true scores, indicating the precision of measurements.
Criterion Validity
The extent to which a measure is related to an outcome or criterion set as the standard.
Construct Validity
The extent to which a test measures what it claims, or purports, to be measuring.
Content Validity
The extent to which a test measures all aspects of the concept or construct it is intended to assess.
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