调查研究方法的优点是，第一回答率高，可以确保样本的数量，若被采访者不在

The advantage of the survey research method is that the first answer rate is high, which can ensure the number of samples. If the interviewee is not at home, he can make the next appointment, and the second can directly ensure the accuracy of the sample to ensure that the interviewee is himself. The required sample, for example, the interviewee's name, gender, and age, was consulted before the interview. The third sample contains a wide range of regions and low cost.

The advantage of the research method is that the first answer rate is high, can ensure the number of samples, if the interviewee is not at home can also make the next appointment, the second can be more directly to ensure that the correctness of the sample is the sample of their own needs, for example, before the interview on the interviewee's name, gender and age and other information related to the relevant reference, the third sample contains a wide range of areas, low cost.

The advantage of survey research method is that the first response rate is high, which can ensure the number of samples. If the interviewee is not at home, he can make an appointment for the next time. The second one can directly ensure the correctness of the samples to ensure that the interviewee is the sample he needs. For example, before the interview, the interviewee's name, gender, age and other information are consulted. The third one is the sample It covers a wide range of regions with low cost.<br>