随机乎？随便乎在进行抽样调查时，为了使问卷的抽样结果具有代表性，所以吾人会要求抽样方法的随机性，相信这是一个人为大众所公认而无庸置疑的事实，但是究竟什么样的方法才称得上是随机呢？在一般人的样板印象里，似乎只要是在某个时间、某个定点随机地将问卷发给行人... Randomly? At random, during the sample survey, in order to make the sampling results of the questionnaire representative, we would ask for the randomness of the sampling method. I believe this is a well-established fact that the public has no doubt about but what kind of method is called Is it random? In most people’s model images, it seems as long as the questionnaire is sent to the pedestrians randomly at a certain time and place.