英语词汇systematic random sample怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	systematic random sample
释义	systematic random sample 简明释义系统随机样本规律性随机样本网络释义 1 ?系统随机样本系统随机样本 ? 系统随机样本(systematic random sample)：样本数为 n 的样本，母体的总数为 N。令 N/n = k，1~k中随机选出一数 a，则 {a, a+k, a+2k, … 双语例句 1 The recommended sample size for a systematic random sampling is 500 children. 系统随机抽样的推荐样本大小是500名儿童。 2 During the course of cluster sample verification, systematic sampling and stratified sampling "s accuracy are prior to simple random sampling" s. 群样本检验中，系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。
随便看	new use of product new user New Valley, Governorate new value new value produced new variable new variable new variant CJD New Variant Creutzfeldt Jakob Disease new variant Creutzfeldt-Jakob disease new variant creutzfeldt-jakob disease new variety new vascularization new vehicle new vehicle new venture new venture group new-venture incubator new ventures new version new vessels new vessels elsewhere new vessels vitreous hemorrhage new vessels-vitreous hemorrhage newvicon

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。