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The modified Allen's test is also performed prior to heart bypass surgery. The radial artery is occasionally used as a conduit for bypass surgery, and its patency lasts longer in comparison to the saphenous veins. Prior to heart bypass surgery, the test is performed to assess the suitability of the radial artery to be used as a conduit.
The modified Allan variance (MVAR), [2] also known as mod σ y 2 (τ), is a variable bandwidth modified variant of Allan variance, a measurement of frequency stability in clocks, oscillators and amplifiers. Its main advantage relative to Allan variance is its ability to separate white phase noise from flicker phase noise.
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Wilson Allen Wallis (November 5, 1912 – October 12, 1998) was an American economist and statistician who served as president of the University of Rochester. [3] He is best known for the Kruskal–Wallis one-way analysis of variance , which is named after him and William Kruskal .
Given this procedure, the PRESS statistic can be calculated for a number of candidate model structures for the same dataset, with the lowest values of PRESS indicating the best structures.
Watzke-Allen test is a test used in the diagnosis of a macular hole. It is a subjective test based on photoreceptor displacement. [1] Test can be used to differentiate full thickness macular hole from other similar conditions and also to assess retinal function after surgical closure of the hole. [2] [3]
The Modified Overt Aggression Scale (MOAS) is a four-part behavior rating scale used to evaluate and document the “frequency and severity” of aggressive episodes. [1] The rating scale is made up of four categories; verbal aggression , aggression against objects, aggression against self, and aggression against others. [ 1 ]
If the test statistic has a p-value below an appropriate threshold (e.g. p < 0.05) then the null hypothesis of homoskedasticity is rejected and heteroskedasticity assumed. If the Breusch–Pagan test shows that there is conditional heteroskedasticity, one could either use weighted least squares (if the source of heteroskedasticity is known) or ...