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The use of money for exchange and trade
Validity
Refers to the extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.
Reliability
A measure of the consistency or repeatability of test scores or measurements over time.
Measures
Quantitative indicators or tools used to assess, count, or describe a phenomenon.
Supposed
Assumed or believed to be the case based on evidence or reasonable grounds.
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