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k方的观测值是什么
更新时间: 2021-05-03 01:38:11  

1、K的平方的观测值是实际频数与理论频数差值平方与理论频数之比的累计和。

2、K的平方的观测值越大,说明“X与Y有关系”成立的可能性越大。

3、计算公式:K^2 = n*(ad - bc)^2/[(a+b)(c+d)(a+c)(b+d)]其中n=a+b+c+d为样本容量。

关键词: 观测 什么

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