Once the auditor has determined the appropriate sample size, she must decide on a way to choose the items in her sample. Most auditors seek to obtain a random sample to get a truer representation ...

In statistics, degrees of freedom define the shape of the t-distribution used in t-tests when calculating the p-value. Depending on the sample size, different degrees of freedom will display ...

Sample Size Neglect is a cognitive bias studied by Amos Tversky and Daniel Kahneman. It consists of drawing false conclusions from statistical information, due to having not considered the effects ...

Phase I trials identify the maximum tolerated doses (MTDs) that could be tested in future trials. In practice, sample size estimate for phase I trials will allow investigators to allocate appropriate ...

Sample size substantially affects power in our example. If we average seven measurements (n = 7), we are able to detect a 10% increase in expression levels (μA = 11, d = 1) 84% of the time with ...

A common objective in applying a statistical test is to compare the mean (average) of one sampled group with some hypothesized mean or the mean of a population. For example, you might want to compare ...