例句與造句

1. Standard practice for probability sampling of materials
   材料的概率取樣的標(biāo)準(zhǔn)操作規(guī)程
2. Practice for probability sampling of materials
   材料概率取樣慣例
3. Practice for acceptance of evidence based on the results of probability sampling
   根據(jù)概率取樣結(jié)果進行數(shù)據(jù)驗收的慣例
4. Random probability samples
   隨機概率抽樣
5. Non - probability sampling
   非概率抽樣
6. It's difficult to find probability sample in a sentence. 用probability sample造句挺難的
7. Standard practice for acceptance of evidence based on the results of probability sampling
   根據(jù)概率取樣結(jié)果所得數(shù)據(jù)驗收的標(biāo)準(zhǔn)實施規(guī)范
8. Standard guide for using probability sampling methods in studies of indoor air quality in buildings
   建筑物中室內(nèi)空氣質(zhì)量研究用概率取樣法的標(biāo)準(zhǔn)導(dǎo)則
9. Inaccuracies in survey data attributable to “ the luck of the draw " in creating a probability sample
   在產(chǎn)生概率抽樣時由于抽樣不足而造成的數(shù)據(jù)偏差
10. Admissibility of strict ps sampling scheme in class of unequal probability sampling scheme without replacement
    抽樣方案在不放回不等概率抽樣方案中的可容許性
11. A type of probability sample in which aggregations of sampling units , called clusters , are sampled at some stage in the process
    是一種將樣本單元聚集在一起的隨機抽樣法.樣本群在抽樣的某一步驟被抽出
12. A kind of probability sample in which a set interval is applied to a list often population to identity elements included in the sample ( e . g . , picking every 10th name )
    一種概率抽樣.以一定的間隔來從人口名單中抽取所需的樣本(如:每隔10個人抽取一次)
13. In telephone surveys , a technique for creating a probability sample by randomly generating telephone numbers . by using this method , all numbers ( including unlisted ) have an equal chance of being called
    在電話調(diào)查中使用的一種方法,它以隨機產(chǎn)生的電話號碼作為隨機抽樣的樣本.通過這種方法,使所有號碼(包括未被列入電話號碼簿的電話號碼)都有同等的被抽樣的機會
14. First , this paper gives an introduction of some methods of unequal probability sampling , their estimators and variance estimators , including sampling with pps with replacement , methods of sampling without replacement suggested by brewer , durbin , sampford , des raj , murthy , rao - hartley - cochran . then , at the basis of rao and bayless ' s study , we consider that population can be splited two random subpopulations , which are respectively drawn from different infinite super - populations , and compare the stabilities of estimators of the methods that given above . we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c . v . )
    本文首先從理論上介紹了若干種不等概率抽樣方法，它們的估計量、估計量的方差及其估計，其中包括有放回ppz及pps抽樣，不放回不等概率抽樣中的brewer 、 durbin 、 sampford 、 desraj ， murthy 、 rao - hartley - cochran等人的方法；其次，在rao和bayless兩人就樣本單元數(shù)n = 2的情形對上述抽樣方法進行比較的基礎(chǔ)上，將總體隨機地分成兩個子總體，視每個子總體取自不同的線性超總體，在文中，我們利用計算機實現(xiàn)隨機分組，并通過畫圖比較各方法估計量的穩(wěn)定性，結(jié)果表明，對變異系數(shù)c . v . ( x )較大的總體而言，兩個超總體之間的微小差異將對估計量的穩(wěn)定性產(chǎn)生很大的影響，從而說明rao和bayless的比較結(jié)果還不夠完善。