[View more Methods 101 Videos]. An example of a wording difference that had a significant impact on responses comes from a January 2003 Pew Research Center survey. When people were asked whether they ...

For example, the smoking status variable has four categories: 1) Smoke every day, 2) Smoke some days, 3) Do not now smoke and 4) Never smoked 100 cigarettes. A survey’s estimates for each category ...