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 ...

Ali Hussain has a background that consists of a career in finance with large financial institutions and in journalism covering business. Vikki Velasquez is a researcher and writer who has managed, ...

Consumers love free samples. And while retailers and manufacturers recognize sampling as an important marketing strategy, until now few understood sampling’s effectiveness. PromoWorks commissioned an ...

UK – The Market Research Society has launched a steering group as part of aims to ensure that minority groups are represented within market research samples. The group has been formed as part of the ...

Please read the following guidelines before requesting a destructive sampling loan. Permission must be granted to perform any type of destructive or invasive sampling on UCM specimens. The term ...

• SSI launched the modern day research sampling industry in 1977. • SSI is a rapidly growing global company with 13 offices in 11 countries. • Today SSI has an international team of more than 335 ...

Pew Research Center regularly conducts public opinion surveys in countries outside the United States as part of its ongoing exploration of attitudes, values and behaviors around the globe. To date, ...