For me, in view of the questionnaire, after receiving criticism in the design of inquiry, made me see Next, we need to design a questionnaire with great care. The content must be covered with the topic questions to clear.And actually works, need to adjust the question every part to clear from respondents confused or curious.
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)