Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
to phrases
stratified sample
adv. 分层抽样
anim.husb. 分层样本先将群体分成若干类[层]，取样时由每类[层]中取出若干个体，使整个样本含有各层按比例的代表
corp.gov. *植阊3/4
math. 分层样本
met. 分层试样; 层状试样
stratified sample
: 11 phrases in 7 subjects
Agriculture1
Business1
Commerce1
International trade1
Mathematics2
Statistics2
Technology3

 The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error | Get short URL | Language Selection Tips