2) method of random proportional sampling
随机比例抽样法
3) stratified proportion sampling
分层比例抽样
4) quota sample
按比例抽样样品
6) stratified random sampling
分层随机抽样
1.
The simple random sampling plan and stratified random sampling plan has been introduced and the application means and effects of which also has been presented,it has some characteristics such as material precision and obvious reduce of sample size,and rational advice has been presented.
介绍了简单随机抽样和分层随机抽样方法及其在检测中的应用方法和效果。
2.
Though stratified random sampling method is adopted for the arterial and collector functional systems,there is a good potential to improve it.
尽管分层随机抽样的方法已经在干线和一般的集散系统得到利用,它仍有很大的发展空间。
3.
Therefore, the minimum variance and deviation methodology was introduced, based on which, stratified random sampling technology was used for sample design, and thus making an overall assessment more truly on water quality in distributi.
为此提出以最小方差和偏差的方法论,采用分层随机抽样技术进行样本设计,从而对管网水质进行较为真实的全面评价,同时对影响管网水质的因素进行分析。
补充资料：按比
1.核定户籍时检查年貌。 2.犹安排。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条