Conducting a survey or a poll seems straightforward enough at first pass. Say, for example, you want to know the percentage of people in a population who like peanut butter and jelly sandwiches. You ...

Statistics are often estimated from a sample rather than from the entire population. If the inclusion probability of the sample is unknown to the researcher, that is, a nonprobability sample, naively ...

Until Ken Buck stumbled Sunday over a question about gays, the “Meet the Press” debate that featured the Republican Senate candidate and Michael Bennet, his Democratic opponent, was notable mainly for ...