A sampling distribution describes the data chosen for a sample from among a larger population.

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.

Amer Ibrahim Al-Omari, Ibrahim M Almanjahie, Javid Gani Dar, Acceptance sampling plans under two-parameter Quasi Shanker distribution assuring mean life with an application to manufacturing data, ...

In particular, two-dimensional extensions of known approximate variance estimators used in linear systematic sampling are introduced. These almost new variance estimators have the advantage of taking ...