関連ワード:  which is not a random sampling    which is not a non random sampling method    which of the following is not a random sampling technique    which of the following is not a random sampling    which is not a form of non random sampling    which is not a method of random selection    which of the following is not a restricted random sampling technique    which of the following is not a non random sampling method mcq    which of the following is not a non random sampling method in research    which of these is not a type of random sampling