查询词典 stratified sample

Methods A cluster stratified sample of 1 681 students from Jianghan University were investigated by SDS.

采用分层整群抽样法抽取江汉大学1 681名本科学生，采用抑郁自评量表进行测评。

Methods A cluster stratified sample of 1747 undergraduates were investigated b a self-designed questionnaire.

整群分层抽取郑州市1747名大学生为调查对象，自行设计问卷进行调查。

Methods A cluster stratified sample of 509 medical college students were questionnaired on epidemic features and the related factors of depression and anxiety.

方法分层整群抽取某医科大学本科生509名进行抑郁、焦虑情绪的流行特征及其相关因素调查分析。

Reproductive health institutions in Suzhou and Jiaxing areas were sampled with stratified sample method.

我国于 1994年就引入生殖健康的概念，并将其作为卫生工作的优先服务项目。

Methods A questionnaire survey on QOL was conducted to a clustered stratified sample of 2036 students of rural or urban to Hubei.

采用分层整群抽样方法，对湖北省城乡中小学生2036名利用《儿童少年生活质量量表》进行生活质量测查。

Methods By using health related behaviors questionnaire for Chinese youths, a stratified sample of 5158 students from 12 junior middle schools in 4 cities in Henan Province were surveyed. The influencing factors were analyzed.

采用分层整群抽样方法，抽取河南省4个省辖市12所初中的5158名学生，应用中国疾病预防控制中心制定的"中国青少年健康相关行为调查问卷"进行调查，并对影响因素进行分析。

Objective To analyze depression, anxiety and the related psychological social factors, and to provide evidence for the prevention of mental diseases and mental health education. Methods A cluster stratified sample of 509 medical college students were questionnaired on epidemic features and the related factors of depression and anxiety.

目的 分析医学生抑郁、焦虑情绪症状及其相关的心理社会因素，学生心理疾病防治和健康教育工作提供依据方法分层整群抽取某医科大学本科生509名进行抑郁、焦虑情绪的流行特征及其相关因素调查分析。

Methods A cluster stratified sample of315undergraduates were investigated with a closed questionnaire,and301questionnaires were available.

采用分层整群抽样法，抽取贵州省在校大学生315名进行无记名封闭式问卷调查，获得有效问卷301份。

Therefore, in order to learn the basic situation of the "two-course" teaching, especially to learn the students" recognition and valuation of the "two-course, this paper surveyed 1200 students in different sex, grade and major, who were selected by stratified sample method in Wuhan University.

大学生认为有必要开设"两课"，而且"两课"教学内容与中学相关教育内容的衔接情况良好，对大学生思想政治观念的形成和今后的发展有一定的帮助；但他们对是否可以通过课堂形式进行思想政治教育的问题存在较大的分歧。

Methods A cluster random stratified sample of404medical college students were investigat-ed with a self-administered questionnaire.

采用分层整群抽样方法对404名医学生进行自填问卷调查。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。