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随机抽样,来研究冥想？

哈佛公开课 - 幸福课课程节选

On--this week because the first concept sheet is different than the rest -you were using the Daily Plate Dietary Assessment -we'll send out this week a sample concept sheet.

这周,因为第一周的观点报告,与众不同,你们用了日常饮食评估表,我们这周会下发一个观点报告范例

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.

这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。

哈佛公开课 - 幸福课课程节选

If only 30% of the forms come back, the bureau will sample six out of seven of the remainder.

ECONOMIST: Statistics

Genetic hackers who get a sample of your DNA could use public databases to figure out whose genetic sample they have and then they would know all about the future written in your genes too.

CNN: Get ready for the risks of genetic testing

Such depths are commonplace when sample cores are drilled out of the earth's crust by geologists.

ECONOMIST: The hole story of global warming