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

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 ...

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 ...