It is generally believed that the extreme things in the macro social phenomenon are very few, and the "two extremes" can counteract with each other in statistic summary.

一般认为，社会经济总体现象中的极端情况都是极少数，而且“两极”的情况会由于统计汇总而相互抵消。

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One important summary value is a t statistic that can be used to measure how well a linear equation fits the data.

一个重要的汇总值是T统计值，它可以用来衡量一个线性方程与数据的吻合程度。

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It detects new hosts, saves up to 12 hours of data, and has a nice summary statistic.

它测试新的主机，可以最多保存12个小时的数据，有一个很好的摘要统计功能。

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Moreover, Muller admits the recognized temperature authorities try to homogenize the temperature records from the thousands of temperature stations around the globe to come up with a summary statistic of the degree of global warming, and serious questions can be raised as to how to do that, disputing a large portion of the warming attributed to humans.

FORBES: Salvaging The Mythology Of Man-Caused Global Warming