分类：单纯随机~、系统~、分层~、整群~、多级抽样~ ☆WHO 还推荐两种方法： 预调查 （Pilot survey）（试点调查） 为了在调查前初步了解被调查群体患病特点，制订调查计划，有时须先进行~， 获得少量的参考资料，以便制订调查计划。
基于20个网页-相关网页
专业预测者调查 Survey of Professional Forecasters
市场调查与预测 market research and forecasting ; Market Research and Prediction ; Market survey and forecast ; Market Investigation and Forecast
预期调查法 Anticipation Surverys
预测性调查 Predictive Research ; Forecast Survey
时间预算调查 TBS
专业预测人员调查 Survey of Professional Forecasters
预计产量调查 investigation of predicted output
商业预期调查 Business Expectations Survey
可选的预聊天调查 Optional pre-chat survey
目的：探讨医院顾客满意度调查问卷的设计及其预调查。
Objective: To explore the design of a questionnaire and its use in a pilot survey on hospital customer satisfaction.
调查表的设计经过文献查阅、专家讨论、预调查等过程。
The questionnaire was designed through literatures reading, experts assessing and pre-investigation.
在预调查后借助SPSS对初测量表进行项目分析、因子分析及有效性检验，证明参与型体育消费者忠诚度量表信、效度都符合统计学要求。
And then make item analysis, factor analysis, and validity test with SPSS after survey. The result shows that the scale is valid.
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