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A mean is a numeric quantity representing the "center" of a collection of numbers or the number that you can replace all the numbers in a data set by to still achieve the same total (the total is not necessarily the sum). There are several kinds of means (or "measures of central tendency") in mathematics, especially in statistics. … 展开
Pythagorean means
Arithmetic mean (AM)
The arithmetic mean (or simply mean or average) of a list of numbers, is the sum of all of the numbers divided by their count. Similarly, the mean of a … 展开CC-BY-SA 许可证中的维基百科文本 Wikipedia - Wikipedia
Wikipedia is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Wikipedia is the largest and most-read reference work in history, and is consistently ranked among the ten most visited websites; as of August 2024 , it was ranked fourth by Semrush, and seventh by Similarweb. …
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Mean - Simple English Wikipedia, the free encyclopedia
Learn about the different kinds of mean in mathematics and statistics, such as arithmetic mean, geometric mean, and harmonic mean. Find out how to calculate and interpret the mean of a …
Geometric mean - Wikipedia
The geometric mean is a mean or average that indicates a central tendency of a set of positive real numbers by using the product of their values. It is used for ratio scale data, such as growth rates or interest rates, and can be calculated using …
Mean | Definition, Formula, & Facts | Britannica
2024年9月9日 · Mean is a mathematical term that refers to a quantity that has a value intermediate between those of the extreme members of some set. Learn about different types …
Wikipedia | Definition, Encyclopedia, History, & Facts
2 天之前 · Wikipedia is a free online encyclopedia that operates under an open-source management style. It is overseen by the nonprofit Wikimedia Foundation and has over 250 versions in different languages. Learn about its …
Wikipedia
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation. It has over 100,000 articles in English and over 1,000,000 articles in other languages.
Mean (Average) | Brilliant Math & Science Wiki
The mean, also called the average, is a measure of central tendency of a group of values. Unless otherwise specified, mean usually refers to the arithmetic mean, as opposed to the geometric mean or harmonic mean.
平均数 - 维基百科，自由的百科全书
平均数（英語： Mean, Average ，或稱平均值）是统计中的一个重要概念。为集中趋势的最常用测度值，目的是确定一组数据的均衡点。
Mean - Wikiversity
2022年4月30日 · The mean or arithmetic mean of a set of numbers is obtained by adding the numbers and dividing the result by the 'number' of numbers. It is a key piece of information: if …
