Systematic sampling is straightforward and low risk, offering better control. However, it may introduce sampling errors and ...

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 ...

Official household surveys are important sources of information: they support policy and decision-making for a wide range of government programs. The uses of household survey data are broad, from ...

SHELTON, Conn., March 15, 2011 /PRNewswire/ -- Survey Sampling International (SSI)—the leading global provider of online and offline sampling solutions—has appointed Chris DeAngelis to head its new ...

Survey Sampling International (SSI) and Opinionology today announced that they have entered into an agreement to combine, pending regulatory approval, bringing together two of the world's leading ...

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 ...

Successfully identified areas where high neodymium-in-soil anomalies coincide with areas of high radiometric activity, leading to the identification of new rare earth elements prospects as well as ...

The image above is a color relief image showing neodymium-in-soil anomalies from the Company’s soil sampling geochemistry, consisting of over 2,000 individual samples taken on 100-meter centers with ...