| 1. | Methods : 2502 residents above 15 years old were selected and studied through random sampling methods in beijing
方法：采用随机抽样方法对北京市人口15岁以上的2502人进行流行病学调查。 |
| 2. | In order to study the awareness , treatment and control rates andthe risk factors of hypertension in qingdao rural residents , a cluster random sampling method was used
为了调查青岛农村居民高血压的患病率、知晓率、服药率、控制率及其影响因素，采用整群随机抽样法，对7个村的18岁以上居民进行血压测量及相关因素调查。 |
| 3. | This paper deals with the problem of non - uniform weed numbers obtained with all types of random sampling methods , discussing the importance of statistical control methods in herbicide efficacy evaluation and showing pertinent calculations
针对随机取样中的各样方内杂草数目不一致问题，讨论了统计控制方法在除草剂药效评价中的重要性以及计算过程。 |
| 4. | The questionnaires were given to rafters , in siaokuluan and lao - nong river , and non - random sampling method is used . 292 effective questionnaires were collected by siaokuluan river , 325 by lao - nong river
本研究采问卷调查的方式，对象为参与花莲秀姑峦溪及高雄?浓溪泛舟之游客，并于两条溪流泛舟终点采便利取样方式进行调查，时间从2005年8月至9月于周休二日假日时实施。 |
| 5. | The study used a stratified random sampling method to look at 2159 junior high school students from 22 schools of 6 counties of northern taiwan , as well as 475 inmates of juvenile correctional institutions ; thus there were a total of 2634 samples
在帮派入侵校园部分，样本反映出校内常有帮派分子活动，少数学生反应受到帮派学生的侵害，约有11 %的学生指出，恐惧校内外帮派分子之侵扰。 |
| 6. | According to the hierarchical random sampling method , we select three areas which are jinan , taian and dezhou . in order to know the morality present situation , then some teachers and students were chosen among the 49 the senior middle schools in jinan , 35 ones in taian and 30 ones in dezhou as research objects
利用分层随机抽样的方法从高、中、低三个层次抽出济南、泰安、德州三个地区，然后再从济南市49所高中、泰安的35所高中、德州的30所高中中分别随机分别抽出两所高中(分重点和非重点)的体育教师、学生为研究对象，依此来了解山东省体育教师的道德现状。 |
