### ?validity of postal survey with low returns

Posted:

**Tue Feb 03, 2009 5:40 am**28,438 (about 10% of local population) postal survey was sent out and there were 781 correct returns. 781 is 2.7% of ramdomly chosen people for the survey. Therefore the return containing the views of the people is 0.27% of the local population in total. Is this low figure an "acceptable" return i.e. this figure of return is viewed to be an expected average? Can this result be considered to be a valid survey i.e. could one said the opinion of the 781 returns be representative of the whole population of 280,000? Thanks. Carl