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 ...

Oct. 8, 2008— -- Surveys based on a random sample of respondents are subject to sampling error – a calculation of how closely the results reflect the attitudes ...

It's possible to calculate the standard error in MATLAB by running a one-line command. MATLAB is a programming platform from MathWorks that's designed for and used by ...

Log-in to bookmark & organize content - it's free! CBS Elections and Surveys Director Anthony Salvanto discussed the idea of margin of error and how sampling error ...

This paper gives alternative derivations for the standard variance formulas in two-stage sampling. The derivations are based on a direct use of the statistical properties of the sampling errors in the ...

In presidential elections, even the smallest changes in horse-race poll results seem to become imbued with deep meaning. But they are often overstated. Pollsters ...