It's plausibly a random sample from this population.

这是一个真正的取样。

Do I go out to Harvard yard and take a random sample of sophomores to study meditation?

是不是可以在哈佛大二学生里样来研究冥想?

An advisor to the U.S. Centers for Disease Control says blood donors are not a random sample of the population.

美国疾病防治中心的一名顾问表示，献血者不是人群中取的样本。

This is usually done by a " random sample" over the telephone.

这通常是通过电话“样”来完成的。

The research involves collecting data from two random samples.

【data】该项研究需要从两个样本里收。

You actually want to take a random sample.

你实际上想样。

Out of a random sample of drivers, 21% had been in an accident in the previous year.

【sample】在样调查的驾驶员中，有 21% 曾在上一年发生过事故。

If we took a random sample of a million people who majored in math, the subset who are portrait artists might be relatively small.

如果我们取 100 万个数学专业的人，其中是肖像画家的子可能相对较小。

And actually that works pretty well but what makes it especially hard for the pollsters is that it's hard to get a random sample.

实际上效果很好，但对民意测验者来说特别困难的是，很难获得样本。

So if you take a random sample, and that's exactly what we did when we found these 7 samples.

所以如果你取样本，这正是我们在找到这 7 个样本时所做的。

And they're saying, if I were to measure it of a random sample of high school seniors, what would it look like?

他们说，如果我对高中毕业生的样本进行测量， 它会是什么样子？

The most significant would be for random sampling because, of course, in order to take a random sample, after all, you need random numbers.

最重要的是样， 因为当然，为了样，毕竟你需要数。

If you just surveyed, you know, like a random sample of people passing by on the street and you asked them, is PayPal a bank?

如果你刚刚进行调查，你知道，就像样在街上路过的人一样，你问他们，PayPal 是一家银行吗？

When we took these 7 samples and took their mean, that mean can be viewed as a random sample from the sampling distribution.

当我们获取这 7 个样本并取其均值时，该均值可以看作是来自样分布的样本。

Let's look at choice C or problem part C. The annual salaries of a random sample of 50 CEOs of major companies, 25 women and 25 men.

让我们看一下选项 C 或问题 C 部分。样 50 名大公司 CEO 的年薪，其中 25 名女性和 25 名男性。

We are confident that there is a 99% chance that a random x, a random sample mean, is within-- and let's figure out this value right here using a calculator.

我们确信 x（ 样本均值） 有 99%的会在 - 让我们在这里使用计算器计算出这个值。

In 1982, American sociologists Karl Alexander and Doris Entwisle began following the lives of a random sample of 800 first grade students growing up in a variety of neighborhoods in the Baltimore area.

1982 年，美国社会学家卡尔·亚历山大 (Karl Alexander) 和多丽丝·恩特维斯 (Doris Entwisle) 开始跟踪样的 800 名一年级学生的生活，这些学生在巴尔的摩地区的不同社区长大。

So what you do is you survey a random sample of that population and then you can calculate statistics on that sample that hopefully can estimate the population as a whole.

所以你要做的是调查该人口的样本，然后你可以计算该样本的统计数据，希望可以估计整个人口。

Our recently published study answered this question by tracking a large national random sample of Americans over a critical time period when bodies change from teenage shape into adult form and when people build their identities.

我们最近发表的研究回答了这个问题，方法是在身体从青少年体型转变为成人体型以及人们建立身份的关键时期跟踪大量全国样的美国人。

Those are the five people that I'd sample, and we could talk more about what's a good way to generate a random sample from a population so it's not skewed one way or the other.

那是我要样的五个人，我们可以更多地讨论什么是从人群中生成样本的好方法， 这样它就不会偏斜。