Part-time job in a market research company

There are many part-time jobs in market research, and several of my classmates have done part-time jobs in strategic research. What you said is just one of them, it should be the mystery customer test of the bank. Is to pretend to be a customer, go to the bank for testing, and find problems. Other part-time jobs include, for example, questionnaire survey, telephone interview, inviter forum, questionnaire input, forum text output and so on.