Quick Data Collection

For those who are students are will have to do a survey, the easiest way I found is to take the non- probability sampling technique is the "SNOWBALL"; this suggest that you need firstly to identify the cases that are likely to match your survey requirements, e-mail them and consequently ask them to forward the survey to other cases. Translation : email your contacts and ask them to fwd the survey to their contacts, this contact chain can bring a lot of respondents very quickly.