Discussing On Some Questions Of Multi-Objects Sampling Techniques

Sampling technology has been applied to many fields in the society. Infact, most large-scale surveys serve many purposes. Primarily, this is due tothe high cost of initiating and fielding a survey and the relatively low cost ofadding extra questions to a survey instrument. As a result, a typical surveyinstrument may contain hundreds of items to be obtained for each sampledunit. In addition, a good sample design will provide precise estimates ofpopulation values for each subpopulation and, also, each item of interest. Sowe need to study the multi-objects sampling techniques. But it is socomplicated that we can't deal with it as single-object sampling, such as thesample design, estimating of population parameters, sample size estimation,control of variance, and so on. In that case, the multi-objects samplingtechnology becomes the important issue which needs to study and solveurgently.In chapter one, author explains the main content of multi-objectssampling technology, defines the meaning and classification, discusses themethods of multi-objects sampling. In chapter two, we focus on the estimationof the sample size, and testify the existence of the location of the best sample. Chapter three deals with the combine confidence intervals of multi-objectssampling, and it's our emphases of this paper. The last chapter discusses otheraspects of multi-objects sampling.We have some ideas maybe new, but definitely they need to beameliorated. They are expatiated as the following:Firstly, this paper presents the confidence intervals of multi-objectssampling, and makes combine interval estimation of all objects. Secondly, thispaper uses the method of multivariate statistical analysis, and we call themethod ellipsoid equation. Thirdly, this paper discusses the sample sizeestimation of multi-objects sampling.