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非概率抽样:(Non-Probability Sam-Pling)指调查者根据自己的方便或主观判断抽取样本的方法。
据研究者的主观意愿、判断或是否方便来抽取调查对象的一种抽样方法。在此种方法中个体被抽样抽中的概率是未知的和无法计算的,往往产生较大的误差,而且误差无法估计。在特定条件下,对于无法确知的总体的调查,可以使用非概率抽样,但在应用中需要注意所得结论的适合性。
The subjective apiration that occupies investigator, judgement or convenient come a kind of of draw-out investigation object sampling method. Individual in this kind of method the probability in be being sampled to smoke is sealed and imponderable, often produce bigger error, and the error is inestimable. Below specific requirement, to the overall investigation that cannot tell truly, can use blame probability to sample, but the aptness that needs to note earning conclusion in application.
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