Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of organisms of ...

Generalized variance functions (GVF's) are used in a number of sample surveys as a convenient method of publishing sampling errors. The method consists of estimating the relative variance (relvariance ...

H. O. Hartley and R. L. Sielken, Jr. Frequently it is reasonable for a sample surveyor to view the finite population of interest as an independent sample of size N from an infinite super-population.

Introduction / William L Thompson -- PART ONE: OVERVIEW AND BASIC CONCEPTS -- Sampling rare populations / Lyman L. McDonald -- Separating components of detection probability in abundance estimation: ...

A typical Pew Research Center national survey – regardless of mode – is designed and implemented with a total survey error approach in mind, aimed at minimizing ...