The study is based on a large population sample and took into account other possible factors, such as depression, season and levels of physical activity.

这项研究基于大群体样本，并且考察分析了其他可能影响的因素，如忧郁，季节和身体活动水平。

youdao

So do you remember here that the premise point to a sample of population and the conclusion extrapolates to the rest of the population.

你们记得这里前提，指的是一个人群样本，结论假设了其他人群。

youdao

Great care was taken to try and get a representative sample of the general population.

受访人群都是经过细心挑选，能够代表大众的。

youdao

And the other thing you can do is take self reports like the ones you're doing, hopefully do enough of them, and a random enough sample of the population, that you can extrapolate from that sample to the whole population, and try to estimate what people are eating in that way.

还有其他可以做的,比如大家正在做的这种个体调查,希望能把它做的充分些,如果有充足的随机样本,就可以从样本推断出,整个总体,从而推断哪类人有这样的饮食习惯

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

These analyses are based on the assumption that the animals collected represent a randomly selected and thus representative sample of the population.

ECONOMIST: Animal personalities

The Public Services Department is heading up the waste strategy, and is trying to involve as broad a sample of the population as possible.

BBC: Public asked for opinion on waste

However, people are unlikely to confess to breaking the law, and tax inspectors do not usually check on a random sample of the population.

ECONOMIST: The informal economy is neither small nor benign