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现在,越来越多的企业开始重视市场调查,可往往是投入了很大的财力和人力,却没有收到很好的效果。设计一个优秀的市场调查方案,对于确定正确的企业发展战略和提高单位经济效益具有十分重要的作用。 市场调查在统计学中属于抽样调查(sampling),即按照随机原则,从总体中抽取一部分单位进行观察,用以推算总体数量特征的一种统计调查。为此,市场调查方案的设计必须遵循统计实验设计的基本原则,即对照原则、齐同原则和随机原则。对照原则指的是实验因素作用的辩认只有在不同情况的对照中才能实现。没有对照,就没有比较和鉴别。齐同原
Nowadays, more and more enterprises are beginning to pay attention to market surveys. They often invest a great deal of financial resources and manpower, but they have not received very good results. Designing a good market research program has a very important role in determining the correct enterprise development strategy and improving the economic efficiency of the unit. Market research in statistics belong to the sampling (sampling), that is, in accordance with the random principle, from the overall part of the unit for observation, to calculate the overall quantitative characteristics of a statistical survey. To this end, the design of market research programs must follow the basic principles of statistical experimental design, that is, the principle of comparison, the principle of homogeneity and the principle of randomness. The principle of control refers to the fact that the identification of the role of experimental factors can only be achieved in the contrast between different situations. There is no comparison, there is no comparison and identification. Same with the original