Mark Blumenthal and Natalie Jackson of Huffpost Pollster write: If you read polls in the news, you’re probably familiar with the term “margin of error.” What ...

Scandinavian Journal of Statistics, Vol. 38, No. 2, Papers from 23rd Nordic Conference on Mathematical Statistics (June 2011), pp. 377-392 (16 pages) Sampford's unequal probability sampling method is ...

The aim of this paper is twofold. First, three theoretical principles are formalized: randomization, overrepresentation and restriction. We develop these principles and give a rationale for their use ...

The COVID-19 pandemic has infected over 38 million people around the world and is showing no signs of going away any time soon. Researchers worldwide are frantically working on developing an effective ...

Public Editor’s Note: Almost every day, in our Public Broadcasting Service Public Editor’s email box, we receive written questions and concerns from confused or misdirected audience members who ...

The nuts and bolts of our public opinion surveys. A summary of ABC News' polling standards and survey methodology follows. ABC News maintains standards for disclosure, validity, reliability and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...