cluster wheat,club wheat：密穗小麥

"集體取樣","cluster sampling" | "密穗小麥","cluster wheat,club wheat" | "離合器","clutch"

cluster point：聚點(diǎn)

clothoid 回旋曲線 | cluster point 聚點(diǎn) | cluster sampling 分組抽樣

cluster point of a sequence (net)：一(串網(wǎng))序列的聚點(diǎn);系列的聚點(diǎn)

"聚集;群落{統(tǒng)};聚落;部落","cluster" | "一(串網(wǎng))序列的聚點(diǎn);系列的聚點(diǎn)","cluster point of a sequence (net)" | "群落抽樣[統(tǒng)]","cluster sampling"

three-stage cluster sampling：三段叢聚抽樣

三標(biāo)準(zhǔn)差規(guī)則 three-sigma rule | 三段叢聚抽樣 three-stage cluster sampling | 三段最小平方 three-stage least squares

one stage cluster sampling：一階段整群抽樣

odds ratio, OR 優(yōu)勢比 | one stage cluster sampling 一階段整群抽樣 | one-tailed probability 單側(cè)概率 one-way ANOVA 單因素方差分析

cluster set：聚值集

cluster sampling 分組抽樣 | cluster set 聚值集 | coadjoint functor 余伴隨函子

cluster set：聚點(diǎn)集

1662,"cluster sampling","群落抽樣;群體抽樣" | 1663,"cluster set","聚點(diǎn)集" | 1664,"coaxial circles","共軸圓"

clustered access：群集存取

cluster sampling 分組取樣 | clustered access 群集存取 | clustering 群集

Simple random sampling：簡單隨機(jī)取樣

依抽樣的方法可分: 簡單隨機(jī)取樣(Simple random sampling)网址黄免费、分層隨機(jī)取樣(Stratified random sampling)精品国产一级A片在线看、集群取樣(Cluster sampling)等三種. 通常樣本的大小決定族群目標(biāo)的代表性,取樣方式的正確,使樣本的代表性盡量提升遠(yuǎn)比樣本的大小還要重要.

Stratified random sampling：分層隨機(jī)抽樣

為顧及樣本的代表性和每區(qū)學(xué)生在母群體中所占的比例,本研究以臺灣地區(qū)國民小學(xué)學(xué)生為調(diào)查的母群體,運(yùn)用分層隨機(jī)抽樣(stratified random sampling)和叢集抽樣(cluster sampling)合并使用,也就是多階段的抽樣法(multistage sampling).