Answer: Standard deviation
Explanation:
Standard deviation is expressing the quality of how much group members differ from mean value for the group.
Answer:
c. "Currency Exchange"
Explanation:
According to my research on Economics, I can say that based on the information provided within the question the term being described in the question is called "Currency Exchange". When exchanging currency for example, Argentinian Peso (ARS) with United States Dollar (USD), There are two values a sales price and a buying price.
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