Consider a set of observations (also called features, attributes, variables or measurements) for each sample of an object or event with known class y.

设观测向量x(也被称作特征、属性、变量、测量值等)对于对象或事件的每一个采样的所属类y都是已知的。

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

According to the observations of a sample of indicators, a measure of samples to choose between the targets of the similarity measurement method and use it as the basis for clustering;

根据抽样指标的观测值，选择某种度量样品之间的指标相似度的度量方法，并以此为聚类依据；

youdao

If you have a sample with n observations, it's the summation I = 1 to n of xi/n--that's the average.

如果你有n个观测值,对Xi从i=1到n求和再除以n

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Therefore, the convention among academic researchers is that it is ok, and you can claim your conclusion based on only a sample of observations, as long as the probability that you are wrong is no bigger than 5%.

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Final results of the first research sample of the investigators' observations will be published in late March.

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