Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...

This is a preview. Log in through your library . Abstract A generalized flexible model for vegetation survey is presented. It consists of a two-stage sampling system, where the primary sampling ...

The random-digit-dial survey (RDD) was conducted according to Pew Research Center’s standard protocol for RDD surveys. Interviewing occurred April 25 through May 1, 2018, with 1,503 adults living in ...

This technical note covers household surveys with a focus on probability sampling, bias, and survey weights. It explains how households are selected in a representative way from a population for a ...

The Condor, Vol. 117, No. 1 (February 2015), pp. 87-93 (7 pages) ABSTRACT The Grenada Dove (Leptotila wellsi) is critically endangered; its abundance, as estimated by territory mapping, ranges from 68 ...

We collaborate with the world's leading lawyers to deliver news tailored for you. Sign Up for any (or all) of our 25+ Newsletters. Some states have laws and ethical rules regarding solicitation and ...

Rodolphe Barrere is co-founder and CEO of Potloc, a market research company pioneering a new approach to extracting consumer insights. The best businesses understand the importance of listening to ...

A seafood sampling survey has revealed some non-compliances but an overall low risk to public health. In England and Wales, 152 samples of wild caught fish, crustaceans and cephalopods were purchased ...