hi everyone, i am currently writing my dissertation and on chapter 3 methodology,
i have already administered the questionnaires but my problem is that my supervisor wants me to change a few things so  CAN QUESTIONNAIRES BE CHANGED AFTER it has been adminstered?

Not unless you readminister them so basically start again. If you change the questions but use the responses to the previous set of questions, then your data would not be valid. Doing so could land you in quite a bit of trouble. Unless you have time to start again (and a pool of respondents that are willing to fill them in again) I think your best option is to tell your supervisor that you've already got the data, and is there any alternative types of analysis you could do on it, that might help to meet their concerns about the original questionnaires.

thanks i dont have a problem sending the questions to the company cause my sister works there so she will be on thier tail to fill the forms asap. my only problem is the supervisor not telling her before adminstring the questions...i just hope am not in trouble for that