Surveys can produce a large volume of information for the gathering parties to peruse and collate, so developing good surveys is important for both the respondents who have to understand the questions and for the collators to get useful data.
After you receive the data, you need to pull it all together. Look for trends in the data and for places where you can exploit opportunities. Examine the data to see what calls out to you as the business analyst.
Requirements gathering techniques include the easy to send, but sometimes hard to develop, survey method to obtain data from a wide variety of people located anywhere. Surveys, however, are notorious for many faults such as ambiguity and a lack of response.