It is well known that sampling variability, if not properly taken into account, affects various ecologically important analyses. Statistical inference for stochastic population dynamics models is ...

He demonstrates that a large number of polls generating seemingly dissimilar results actually produced estimates within the margin of sampling error, except for just one or two of them.

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Every survey finding published by Pew Research ...

This is a preview. Log in through your library . Abstract Examined in this study were three procedures for estimating the standard errors of school passing rates using a generalizability theory model.

SSRS conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from Feb. 1, 2024, to June 10, ...