Pearson's chi-squared test

GPTKB entity

Statements (32)
Predicate Object
gptkbp:instanceOf statistical analysis
gptkbp:alsoKnownAs chi-square test
gptkbp:alternativeTo association between variables
gptkbp:application genetics
contingency tables
survey analysis
gptkbp:appliesTo categorical data
gptkbp:assumes independent observations
sufficiently large sample size
gptkbp:calculationMethod sum of squared differences between observed and expected frequencies divided by expected frequencies
gptkbp:distributionUnderNull gptkb:chi-squared_distribution
gptkbp:field gptkb:mathematics
data analysis
statistics
https://www.w3.org/2000/01/rdf-schema#label Pearson's chi-squared test
gptkbp:introduced gptkb:Karl_Pearson
gptkbp:introducedIn 1900
gptkbp:limitation not suitable for small expected frequencies
sensitive to sample size
gptkbp:nullHypothesis no association between variables
gptkbp:relatedTo gptkb:Fisher's_exact_test
gptkb:Yates's_correction
gptkb:likelihood-ratio_test
gptkbp:requires expected frequencies
observed frequencies
gptkbp:statistic chi-squared statistic
gptkbp:symbol χ²
gptkbp:type non-parametric test
gptkbp:usedFor goodness of fit
testing independence
gptkbp:bfsParent gptkb:Karl_Pearson
gptkbp:bfsLayer 4