In the days to come, we should expect more polls to be reported so I thought it would be best to discuss more closely the Philippines’ survey scene. In this first of a three-part series, I describe ...

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 ...

A new method is proposed for imputation of missing values in sample survey data. The procedure uses standard statistical methodology, permits a general specification of the nonresponse process, and ...

Pew Research Center’s international surveys are largely conducted via telephone or face-to-face interviews, depending on the country. (The exceptions are the United States and Australia, where surveys ...

The Survey Research Center (SRC) at the University of Michigan is a well-known survey research entity. In the 1960s, it boasted one of the best survey sampling experts (Leslie Kish) and a permanent ...

The National Sample Survey, under the Ministry of Statistics and Programme Implementation, has been conducting large-scale sample surveys on All-India basis since the 1950s. These surveys are the most ...

The main types of non-response are no contact and refusal. In Chapter 2, we discuss some theories for these types of non-response. In addition, we present an overview of the characteristics associated ...

A sample survey has many potential sources of error that generally have a systematic effect on the outcomes. Therefore, many large-scale field experiments are ...

Surveys allow companies to gather information about their customers. With data about buying habits and future needs, companies can provide better service. Survey results can also generate more sales ...

With the approval of the State Council of the People’s Republic of China, the Second China National Sample Survey on Disability (hereinafter referred to as “the Survey”) is under way from 2006 to 2007 ...

The first part of this three-part series described the science behind sample surveys. This next part identifies several opinion poll outfits and the people leading these firms, and then describes ...