How Many People Should We Survey?

The most common question we get asked is “How many people should we survey?” The answer is at the intersection of cost and error range. Let’s tackle error range first. When we do probability surveys of house lists, here is the margin of error...

The Meta-question: Should We Ask Questions?

Pete Cape, global knowledge director for SSI, recently shared his thinking behind his updates to the data collection methods module of the UGA/MRII online course, Principles of Market Research (PoMR). Presenting a webinar, “Fit for Purpose: Choosing the Right...