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 ...

Random sampling is a random means of gathering data points from all groups. It eliminates bias within your data sets by using ...

When observations are costly or time-consuming but the ranking of the observations without actual measurement can be done relatively easily, rankedset sampling (RSS) can be employed instead of simple ...

Journal of the Royal Statistical Society. Series B (Statistical Methodology), Vol. 76, No. 1 (JANUARY 2014), pp. 197-215 (19 pages) Multiphased designs and biased sampling designs are two of the ...