Test de Brown-Forsythe
Contenu
Titre (dcterms:title)
fr
Test de Brown-Forsythe
en
Brown Forsythe test
Identifiant (dcterms:identifier)
obo:STATO_0000080
label (rdfs:label)
en
Brown Forsythe test
fr
Test de Brown-Forsythe
has part (obo:BFO_0000051)
has curation status (obo:IAO_0000114)
definition (obo:IAO_0000115)
en
the Brown Forsythe test is a statistical test which evaluates if the variance of different groups are equal. It relies on computing the median rather than the mean, as used in the Levene's test for homoschedacity.
This test maybe used to, for instance, ensure that the conditions of applications of ANOVA are met.
This test maybe used to, for instance, ensure that the conditions of applications of ANOVA are met.
fr
Le test Brown Forsythe est un test statistique qui évalue si la variance des différents groupes est égale. Il s'appuie sur le calcul de la médiane plutôt que de la moyenne, tel qu'utilisé dans le test de Levene pour l'homoscédasticité.Ce test peut être utilisé, par exemple, pour garantir que les conditions d'application de l'ANOVA sont respectées.
term editor (obo:IAO_0000117)
en
Orlaith Burke
en
Alejandra Gonzalez-Beltran
en
Philippe Rocca-Serra
fr
Jean-Marc Meunier
definition source (obo:IAO_0000119)
en
adapted from Wikipedia and Brown, M. B., and A. B. Forsythe. 1974a. The small sample behavior of some statistics which test the equality of several means. Technometrics, 16, 129-132.
has_specified_input (obo:OBI_0000293)
has_specified_output (obo:OBI_0000299)
achieves_planned_objective (obo:OBI_0000417)
R command (obo:STATO_0000041)
<p><a href="http://www.statmethods.net/stats/anovaAssumptions.html">http://www.statmethods.net/stats/anovaAssumptions.html </a></p>
<p> The hovPlot( ) function in the HH package provides a graphic test of homogeneity of variances based on Brown-Forsyth. In the following example, y is numeric and G is a grouping factor. Note that G must be of type factor. # Homogeneity of Variance Plot library(HH) hov(y~G, data=mydata) hovPlot(y~G,data=mydata)</p>
<p> The hovPlot( ) function in the HH package provides a graphic test of homogeneity of variances based on Brown-Forsyth. In the following example, y is numeric and G is a grouping factor. Note that G must be of type factor. # Homogeneity of Variance Plot library(HH) hov(y~G, data=mydata) hovPlot(y~G,data=mydata)</p>
seeAlso (rdfs:seeAlso)
subClassOf (rdfs:subClassOf)
has broader (skos:broader)
hierarchy level (md:hierarchyLevel)
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Titre | Label alternatif | Classe |
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Transformation de données | Class | |
Test d'homoscédasticité | Class |
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