Collect data.1. The researcher questionnaire. The distributed queries to sample the 200 set to those who use the service to ทางศูนย์การค้า. By collecting basic information and information related to the subject research.2. Check selection questionnaire respondents provided information completely. The record information truthfully.3. It results from the analysis of the data obtained from the sample, which collect, information researcher questionnaire Those who use the service to the shopping centre. And take in data collection included 3 days.
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