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.

Systematic sampling is a probability sampling method where samples from a larger population are selected according to a random starting point but with a fixed, periodic interval.

It's a single value that happens with probability 1 (all other values' probabilities = 0) Sampling distribution gives probabilities for the means of all possible samples (of same size) from a ...

This paper describes certain quota sampling procedures and attempts to show that they are very close to traditional probability sampling. Quotas are shown to depend on availability for interviewing ...

Their study titled, “An Innovative Non-Pharmaceutical Intervention to Mitigate SARS-CoV02 Spread: Probability Sampling to Identify and Isolate Asymptomatic Cases,” was released at the pre ...

Why do pollsters make such a big deal about probability sampling? You'd think that choosing people to interview should be easy. Take three of these, four of those, and two of the other. But it's ...