Central Limit Theorem: A sampling distribution of the mean is approximately normally distributed if the sample size is sufficiently large. This is true no matter what the population distribution is.

A discrete distribution is a statistical probability distribution that represents the possible discrete values a variable can take.

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.

Among them, this article focuses on the latest cases of European countries that attempt to shift their survey methods based on probability sampling from conventional ones such as face-to-face ...

Sample mean. Sampling from the Normal distribution. Order statistics. Sample statistics. Sampling distributions. Parameter estimation. Interval estimation. Hypothesis testing. Maximum-likelihood ...

Estimators of the population mean and the population size are considered. Computer simulated results are given, and an example using line-intercept sampling of vegetation is provided to illustrate ...