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Arithmetic mean - Wikipedia, the free encyclopedia
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日期：2024-11-10
In mathematics and statistics, the arithmetic mean (pronunciation: /ˌærɪθˈmɛtɪk ˈmiːn/, stress on third syllable of "arithmetic"), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numb...看更多
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