In that year, some polls in Florida, for example, indicated that Hillary Clinton was just a couple of percentage points ahead ...

Conducting a poll isn’t an exact science. The process is susceptible to lots of common problems and baked-in biases — more than just the “margin of error.” By ...

This article originally appeared on Undark. When pollsters, journalists, and pundits want to signal that an opinion poll may not be right on target, they often turn ...

I am a statistician, and part of my job is to make inferences and predictions. With unlimited time and money, I could simply test or survey the entire group of people I am interested in to evaluate ...