交叉分析(卡方)是一种什么方法
交叉分析通过列联表分析两个分类变量之间的关联性,使用卡方(χ²)检验判断关联是否具有统计学显著性。提供观察频数、期望频数、卡方值、p值等。
核心特性
权威参考文献
- Pearson, K. (1900). On the criterion that a given system of deviations from the probable in the case of a correlated system of variables is such that it can be reasonably supposed to have arisen from random sampling. Philosophical Magazine, 50(302), 157-175.