Normally distributed data assumes that about 68% of the values in the sample are within 1 standard deviation of the mean.

正态分布数据认为，样本中约68%的数值分布在距离平均值为1的标准偏差之内。

youdao

The population mean is often written "x-bar." If you have a sample with n observations, it's the summation i = 1 to n of xi/n--that's the average.

人口均值经常写成“x-条形柱”，如果你有一个样本有n个观测者，是从 i=1到n和的xi/n，这是平均值。

youdao

In contrast, the attractive men in the NCDS sample have a mean IQ of 105.00, and the unattractive men have a mean IQ of 91.39.

与之相反的是，在抽查中，有魅力的男士平均智商是105.00，没有魅力的男士平均智商是91.39。

youdao

We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

我们有几种不同的方式去定义这个概念,取决于我们指的是,样本均值还是总体均值

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In a meritocracy the Lords would increasingly come to represent a random sample of the population over the generations, as regression to the mean moves all to the average.

ECONOMIST: On R&D, hospital care, hemp, the House of Lords, AIPAC, Jean Baudrillard, Europe | The