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 ...

Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.

This article discusses practical problems in connexion with the taking of sample surveys for demographic inquiries in undeveloped countries. The discussion is divided into three main topics, dealing ...

THE contemporary population of the United States seems to have not only a taste but also a distinct genius for statistical research. It does not follow, however, that American mathematicians have at ...

Sampling is the process of collecting some data when collecting it all or analyzing it all is unreasonable. Before addressing why sampling still matters when massive amounts of data are available and ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...

A semester-long study of topics in Statistics. Topics and emphases will vary according to the instructor. This course may be repeated for credit with different topics. See the New and Topics Courses ...