What It's a study made of questions that provide numbers as the result (a.k.a. you can see nicely in a spreadsheet and create charts of it): multiple choice, check box, scale, among others. Why Quick and unexpensive way to measure user satisfaction and collect feedback of product. It could indicate the need for a deeper qualitative test (usability or focus group). Be aware: if the survey is not carefully thought, the results could be contaminated by the question that you made or the options that you give. Ugh.