算术平均数

Also known as statistical mean value, statistical mean, arithmetic mean value, AM, mean, average

sum of a collection of numbers divided by the number of numbers in the collection

AI overview

The arithmetic mean, commonly known as the average, is calculated by adding up all the numbers in a group and dividing by how many numbers there are. It matters because it gives you a single, simple number that represents the typical value of a collection, making it easier to understand and compare groups of data at a glance.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Subclass of: statistic
Image: Seesaw with mean.svg

Show 7 more facts

different from: sample mean
NCI Thesaurus ID: C53319
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
maintained by WikiProject: WikiProject Mathematics
greater than: geometric mean
less than: root mean square
Commons category: Arithmetic mean

Sources (4)

via Wikidata · CC0

Article · 中文

算术平均数（arithmetic mean）是表征数据集中趋势的一个统计指标。它是一组数据之和，除以这组数据个数/項数。算术平均数在统计学上的优点，就是它较中位数、众数更少受到随机因素影响，缺点是它更容易受到极端值影响。计算公式为：在统计学中，对样本的平均值用表示，对母体数据的平均值用表示。樣本平均數可作為母體平均數的一個。

Abstract from DBpedia / Wikipedia · CC BY-SA

算术平均数

Wikidata facts

Article · 中文

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