At some point in your past, you have likely heard the fields of probability and statistics glued together, as “probabilityandstatistics.” The two fields are actually quite different: The domain of ...

At some point in your past, you have likely heard the fields of probability and statistics glued together, as “probabilityandstatistics.” The two fields are actually quite different: The domain of ...

Serious polling requires careful data collection and careful adjustment. It doesn't mean much to say your poll is a "probability sample" when your nonresponse rate is 90 percent.

Sampling error, however, is oversimplified when presented as a single number in reports that may include subgroups, poll-to-poll changes, lopsided margins and results measured on the difference.

The classical nonparametric hypotheses of symmetry and equality of distribution functions are extended to hypotheses of approximate symmetry and approximate equality, by allowing for gross errors, ...

But in truth, the “margin of sampling error” – basically, the chance that polling different people would have produced a different result – doesn't even come close to capturing the ...

Detailed information on Pew Research Center international survey meethodology, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by ...