The second question to ask is whether the sample is representative? See what I mean?

第二个要问的问题是，样本是否有代表性？明白我的意思吗？

youdao

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

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

耶鲁公开课 - 金融市场课程节选

Smaller sample sizes mean more random outcomes.

FORBES: Magazine Article

Though, this wouldn't mean sitting down and reading through 100 sample sentences in one shot.

ENGADGET

Where bills are higher, such as in the South West, they appear to be less keen - although the small sample sizes in these areas mean that the data needs to be treated with caution.

BBC: Getting fat on water