Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

Sample Size Neglect is a cognitive bias whereby people reach false conclusions by failing to consider the sample size in question.

In general, care should be taken when interpreting charts that use a nominal sample size to compute control limits, since these limits are only approximate when the sample sizes vary.

Hi, I hope this is the best forum for this question and that someone can enlighten me with a clear answer. I work in a head office of a bank. One of my responsibilities is Quality Checking the ...

Many applications involve monitoring incidence rates of the Poisson distribution when the sample size varies over time. Recently, a couple of cumulative sum and exponentially weighted moving average ...

Using this t statistic in the standard error, one can express the expected width of the confidence interval as a function of the sample size. Alternatively, a sample size can be found to achieve a ...