For selecting samples in this study Use the method to select groups of non-probability sampling. Types of group selection as a coincidence or because in the example can provide information related to issues that require research as important, easy to select a sample, the sample unit and often cooperate to provide high data. Coupled with the timing and budgets in education and research are limited. The sample group, incidentally, are suitable to do this research, using.200 samples. Reference samples from the finished image in the table to define a sample of the Yamane 95% confidence level that a 5% error value that indicates if the population size is infinity (∞), the number of samples is located at 200 examples. assemblies with the amount of information.Passenger information confidential marketing of airline Air Asia Thailand So it is not.Be aware that the actual population data. Therefore, the Board of education who used the number of samples.As referenced above.
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