stratified sampling的例句大全

[ Methods] Investigation was conducted in residents over 15 from 6 villages and 3 street district with multiplestage stratified chester random sampling method in Wuhan in 2002. [ Results] Of the 356 people investigated, the morbidity rate of the disease was 2.81%.

[方法]2002年用多阶段分层整群随机抽样方法，抽取武汉市蔡甸区3个街、6个村的部分15岁以上居民进行调查。[结果]调查356人，糖尿病患病率为2.81%。

methods an epidemiological survey was carried out house by house according to stratified random varied proportion sampling, nine villages of three towns were chosen.

方法采取分层随机不等比例抽样法，抽取镇安、木城、腊勐3个乡9个行政村，逐户调查村民疟史情况。

Method: Form the multilevel stratified random sampling, we sampled six communities from the two street offices.

对象和方法：通过多阶段分层随机抽样方法抽取天山区2个街道办事处6个社区。

Methods According to stratified cluster sampling, schools and children were chosen for combined Raven's test.

方法在9个设区市的城区和农村小学中按照分层整群随机抽样的原则确定被试的学校和儿童，运用联合型瑞文测验。

This paper discusses cluster sampling and stratified cluster sampling in continuous surveys with censuses.

本文讨论了连续调查中应用普查方法时的整群抽样和分层整群抽样.

Methods: The number of samples was calculated with the optimum allocation stratified random sampling survey.

应用最优分配随机分层抽样方法确定调查点.