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 ...

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 ...

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 ...