A news story might report the following: “About 60% of those…
A news story might report the following: “About 60% of those surveyed supported Barack Obama. Given the sample size of 1,000, the sampling margin of error for the survey was +/- 3%, at the 19 times out of 20 level.”This means that if someone did the same survey many times using the same questions and sampling techniques we would expect that:
Read Details