systematic random sampling

常见例句

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。
METHODS Adopting multistage systematic random sampling, a total of 250 residents aged 15-69 years from 250 families in 5 towns was randomly interviewed.
方法采用多阶段系统随机抽样方法，抽取萧山区5个镇250户15～69岁的常住居民进行入户调查。
Methods A questionnaire survey was conducted by systematic random sampling from 732 residents of new community and 512 residents of old community with need of health education.
方法采用整群随机抽样方法，对新城区732名居民和旧城区5 12名居民采用自填式问卷的方法调查新旧城区居民的健康教育需求。