X-Nico

unusual facts about null hypothesis



Conformal cyclic cosmology

In 2010, Penrose and Vahe Gurzadyan published a preprint of a paper claiming that observations of the cosmic microwave background made by the Wilkinson Microwave Anisotropy Probe and the BOOMERanG experiment showed concentric anomalies which were consistent with the CCC hypothesis, with a low probability of the null hypothesis that the observations in question were caused by chance.

Probability of error

Type I errors which consist of rejecting a null hypothesis that is true; this amounts to a false positive result.


see also

Distorted Music Festival

2005: Architect, Black Lung, Cambion, Converter, the Crystalline Effect, Defused Fusion, Delta of Venus, Enduser, EPA, Jetlag, Killjoy, Maladroit, Mechanised Convulsions, Mono No Aware, the Mutagen Server, Noistruct, n0nplus, Null Hypothesis, Scorn, Vespine, Xian.

Heteroscedasticity

For example, if OLS is performed on a heteroscedactic data set, yielding biased standard error estimation, a researcher might fail to reject a null hypothesis at a given significance level, when that null hypothesis was actually uncharacteristic of the actual population (making a type II error).

Probability of error

Type II errors which consist of failing to reject a null hypothesis that is false; this amounts to a false negative result.