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 ...

Consider a population of 70 individuals, for which you wish to estimate the mean annual income, μ. Assume that you have decided to use the following estimation procedure to make your estimate: simple ...

Error bars illustrate the margin of error for a survey estimate by showing how precise that estimate is. Here are some answers to common questions that might help you better understand charts with ...

Journal of Applied Meteorology and Climatology, Vol. 46, No. 6 (June 2007), pp. 791-813 (23 pages) ABSTRACT Monthly rainfall estimates inferred from the NASA Tropical Rainfall Measuring Mission (TRMM) ...

How four pollsters, and The Upshot, interpreted 867 poll responses: You’ve heard of the “margin of error” in polling. Just about every article on a new poll ...

The Annals of Statistics publishes research papers of the highest quality reflecting the many facets of contemporary statistics. Primary emphasis is placed on importance and originality, not on ...