TERMIUM Plus®

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TEST CHI CARRE [1 record]

Record 1 2015-02-13

English

Subject field(s)
  • Statistical Methods
DEF

A test in which the statistic used has a chi-squared distribution, occurring, for instance, in the following problems: test of the equality between the variance of a normal population and a specified value, based on the variance estimated from a sample taken from this population; comparison between the observed sizes and the theoretical sizes corresponding to a distribution specified in advance or defined from observed values; tests of independence and of homogeneity.

Key term(s)
  • chi-square method
  • chi-squared
  • X2 test
  • chi-squared method
  • Chi square test

French

Domaine(s)
  • Méthodes statistiques
DEF

[Test] concernant la validité du choix de la courbe [qui est basé] sur l'écart entre les fréquences observées ou calculées des valeurs et les fréquences théoriques ou estimées des mêmes valeurs. [...]

OBS

«khi» : Appellation, en grec ancien, de la lettre grecque «x» en minuscule et «X» en majuscule. De nos jours, on rencontre fréquemment l'écriture chi; dans les deux cas on prononce «ki».

OBS

Dans «x2», pour «x carré», le chiffre 2 se place en exposant.

OBS

Comme l'adjectif «carré» remplace «exposant deux», nous croyons qu'il est préférable de ne pas mettre de trait d'union entre ce dernier et «khi» (ou «chi»).

Key term(s)
  • test du X carré

Spanish

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