random sample

常見例句

Instead of getting a random sample, your poll will reflect the activist groups' organizational skills and energy level.
這樣一來，由于無法獲得隨機的抽樣，投票只能反映各激進組織的組織技巧和精力。
They are not a random sample, so those numbers do not represent reality whether or not those numbers serve our interests.
而這些案例不是隨機樣本，所以那些數(shù)據(jù)無法反映現(xiàn)實，無論那些數(shù)據(jù)是否對我們有利。
I am against processing those case studies into numbers, because those numbers would only be valid if the case studies we have are a random sample.
我反對將那些案例研究處理成數(shù)字，因為只有我們所掌握的這些案例是隨機樣本時，那些數(shù)字才有效。

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學生里隨機抽樣,來研究冥想？
哈佛公開課 - 幸福課課程節(jié)選
And I say if you took a random sample of the Americans: "When you woke up in the middle of the night" and said: "What does the America stand for?"
我覺得如果給美國人做個抽樣調(diào)查：,半夜醒來的時候“,被問到，美國人主張什么“
普林斯頓公開課 - 國際座談會課程節(jié)選
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.
還有其他可以做的,比如大家正在做的這種個體調(diào)查,希望能把它做的充分些,如果有充足的隨機樣本,就可以從樣本推斷出,整個總體,從而推斷哪類人有這樣的飲食習慣
耶魯公開課 - 關于食物的心理學、生物學和政治學課程節(jié)選

We estimate that about 5 to 8 percent of a random sample of children have ADD.
NPR: Excerpt: 'Delivered from Distraction'
The monthly Consumer Confidence Survey, based on a probability-design random sample, is conducted for The Conference Board by Nielsen.
FORBES: Consumer Confidence Index Gets a Holiday Boost
The National Federation of Independent Business (NFIB) conducts monthly surveys of a random sample of its 350, 000 members.
FORBES: Is The Jobs Market Really Improving?