查询词典 sampling methods

cluster point of a sequence (net)：一(串网)序列的聚点;系列的聚点

"聚集;群落{统};聚落;部落","cluster" | "一(串网)序列的聚点;系列的聚点","cluster point of a sequence (net)" | "群落抽样[统]","cluster sampling"

Cluster sampling：整群抽样

(4) 整群抽样(cluster sampling) 此法是一种以包含若干个体的单位群为抽样对象的抽样方法. 其具体作法是:首先对所调查总体按需要划分成若干单位群,并对各群进行编号,然后用简单随机抽样法在总体中抽单位群来组成样本.

Cluster sampling：群集抽樣法

接下去应继续努力的在於各项经费、奖助学金的补助;打破课程性别区隔的现象,鼓励更多女性修习数学、科学相关学科在抽样的方法上,首先采立意群集抽样法(cluster sampling),分别在本省北部、中部、南部、东部抽取高级中学(离岛及纯男校除外),

Cluster sampling：群集抽样

6.群集抽样(Cluster Sampling)在本法抽样是以随机选出一群,一群为单位,不是个别单位. 群集抽样之优点简便易行,经济省事. 但是易产生抽样误差危险性很大. 分层之基础有赖抽样设计者之经验及判断. 理想上分层之数目愈多愈好. 因为层数愈多,

Simple cluster sampling：简单整群抽样

Significant figure,有效数字 | Simple cluster sampling,简单整群抽样 | Simple correlation,简单相关

Simple cluster sampling：简单丛聚抽样;简单群聚抽样

简单区集设计 simple block design | 简单丛聚抽样;简单群聚抽样 simple cluster sampling | 简单一致性 simple consistency

post cluster sampling：事后丛聚抽样

正象限相依的 positively quadrant dependent | 事后丛聚抽样 post cluster sampling | 事后调查;控制调查 post enumeration survey

stratified cluster sampling：分层整群抽样

分层随机化stratified randomization | 分层整群抽样 stratified cluster sampling | 分化系数,变异系数coefficient of differentiation

stratified cluster sampling：分层集合体抽样,分层整群抽样

stratified clot 层状血块 | stratified cluster sampling 分层集合体抽样,分层整群抽样 | stratified coal seam sample 分层煤样

three-stage cluster sampling：三段丛聚抽样

三标准差规则 three-sigma rule | 三段丛聚抽样 three-stage cluster sampling | 三段最小平方 three-stage least squares

phenol red：酚红,苯酚磺酞

phenol reagent 酚试剂 | phenol red 酚红,苯酚磺酞 | phenol red test 酚红排泌试验

accessory equipment：附件

accessory equipment 辅助设备 | accessory equipment 附件 | accessory part 附件