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

where is the true probability of observing the jth response level in the ith population. The product multinomial distribution is simply the product of two or more individual multinomial distributions ...

The usual practice in using a control chart to monitor a process is to take samples from the process with fixed sampling intervals. This article considers the properties of the X̄ chart when the ...

This is a preview. Log in through your library . Abstract In [3] the author established necessary and sufficient conditions for asymptotic normality of estimates based on simple random sampling ...

Suppose that the sample of students described in the previous section was actually selected using stratified random sampling. In stratified sampling, the study population is divided into ...

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 ...