First you add all the numbers together. So you add 82+93+75+89 to get 339. Once you get that, you divide it by the amount of numbers there are. In this case, it's 4. 339 divided by 4 is 84.75.
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A for both of them add all the numbers up and divide by the amount of numbers to get your iQR but A is right for both
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I don't know
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Answer:
To know what is the average of it
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