Hypothesis test
皮尔逊卡方独立性检验
卡方独立性检验是一种非参数假设检验，用于确定两个分类变量之间是否存在统计关联或相互独立。该检验由卡尔·皮尔逊于1900年提出，至今仍是分析列联表的标准程序，它不要求数据服从正态分布，只要求观测值相互独立且期望单元格频数足够大。
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来源
- Pearson, K. (1900). On the criterion that a given system of deviations from the probable in the case of a correlated system of variables. Philosophical Magazine, Series 5, 50(302), 157–175. link ↗
如何引用本页
ScholarGate. (2026, June 1). Chi-square goodness-of-fit test. ScholarGate. https://scholargate.app/zh/statistics/chi-square
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