The mean is the average of the numbers: a calculated "central" value of a set of numbers.
Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30
To calculate it: add up all the numbers, then divide by how many numbers there are
I don’t know but I hope you had a good day
Im guessing he answered 30 correct, let me know if im correct
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Step-by-step explanation:
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You need to add more context to the question. I cannot answer it without knowing what "These scales" are.
