Pratique des Biostatistiques
Accueil › Distributions aléatoires continues › Distribution de Chi-carré
 Dernière modification: 11 août 2011

Utilité

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  • strict warning: Non-static method view::load() should not be called statically in /home/iamin/www/umdb/biostats/sites/default/modules/views/views.module on line 906.
  • strict warning: Non-static method view::load() should not be called statically in /home/iamin/www/umdb/biostats/sites/default/modules/views/views.module on line 906.
  • strict warning: Non-static method view::load() should not be called statically in /home/iamin/www/umdb/biostats/sites/default/modules/views/views.module on line 906.
  • strict warning: Non-static method view::load() should not be called statically in /home/iamin/www/umdb/biostats/sites/default/modules/views/views.module on line 906.

La variable Chi -Carré est un modèle qui exprime la distribution de sommes de carrés d’écarts standardisés. Elle permet de calculer la probabilité d’observer des écarts dus au hasard entre des fréquences observées et celles prévues par une loi de probabilité.

Elle permet également de décrire la distribution de variances d'échantillons prélevés dans une même population.