方法证据记录
Chi-square goodness-of-fit test
The chi-square test of independence is a nonparametric hypothesis test that determines whether two categorical variables are statistically associated or independent of one another. Introduced by Karl Pearson in 1900, it remains the standard procedure for analysing contingency tables and requires no assumption of normality — only that observations are independent and that expected cell frequencies are sufficiently large.
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Chi-square goodness-of-fit test
分类方法记录 · hypothesis-test / statistics
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