Capstone Project Đồ án tốt nghiệp Online Survey System System Survey
Beside advantages, online survey also has many disadvantages:
Limited sampling and respondent availability: Certain populations are less likely to have internet access and to respond to online questionnaires. It is also harder to draw probability samples based on e-mail addresses or website visitations.
Possible cooperation problems: Although online surveys in many fields can attain response rates equal to or slightly higher than that of traditional modes, internet users today are constantly bombarded by messages and can easily delete your advances.
No interviewer: A lack of a trained interviewer to clarify and probe can possibly lead to less reliable data. ViệtSurvey will be the solution of that problems, the site not only support user to create and manage survey (result, statistics) but also attract user with points award. User can change points they get from doing survey to money or product from shopping cart.