Reviewed by Robert C. KellyFact checked by Vikki VelasquezReviewed by Robert C. KellyFact checked by Vikki Velasquez Simple random sampling (SRS) is a technique in which a researcher selects a random ...

As an estimator of the population mean, the sample mean based only on the distinct units possesses a remarkable invariance property. Under three forms of simple random sampling, viz. simple random ...

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 ...

Stephen John Haslett is a member of the NZ Ministry of Health Covid-19 Expert Advisory Network. As a member of the Te Punaha Matatini research collaboration Richard Arnold receives funding from the ...