Tag Archives: p-value

Those pesky p-values and simulated p-values

Last time, we investigated the use of the $\chi^2$-test in the following experiment described in [1]: a plot of land was divided into 112 20m by 20m squares. Half of these squares received an artificially large perch, and the researchers observed which squares were chosen by Red-winged Blackbirds to make their nests. The results were […]

P-values and goodness-of-fit normality testing

In statistical hypothesis testing, the computed p-value is the probability of getting a result “as extreme” as the given data under the null hypothesis. Here, “as extreme” means relative to a test-statistic, which has some distribution under the null hypothesis. In the natural sciences, an experiment is performed. A statistical test is used whose null […]