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-∞<χ2<+∞ 0≤χ2≤+∞ χ2≤1 -∞≤χ2≤0 χ2≥1
Surrounded; turning Surrounded; turned Surrounding; turning Surrounding; turned
Surrounded Surrounding To be surrounded To be surrounding
χ2增大,P值减小 χ2减小,P值也减小 χ2增大,P值也增大 χ2减小,P值增大 视数据不同而异
χ12 =χ22 χ12 >χ22 χ12 <χ22 χ12 比χ22准确 χ22 比χ12准确
因为有T<1,不能用χ2检验,应当用四格表的确切概率法 用非连续性校正χ2检验 肯定需连续性校正χ2检验 一定不能用χ2检验 还需要知道n的大小和最小理论频数后才能确定是否可以用χ2检验及是否需对χ2值进行校正
Surrounded Surrounding To be surrounded To be surrounding
因为有T<1,不能用χ2检验,应当用四格表的确切概率法 用非连续性校正χ2检验 肯定需连续性校正χ2检验 一定不能用χ2检验 还需要知道n的大小和最小理论频数后才能确定是否可以用χ检验及是否需对χ2值进行校正
-∞<χ2<+∞ -∞<χ2<0 0≤χ2<+∞ -1<χ2<1 χ2≤1
to be at hospital; surrounding by at hospital; surrounding at hospital; surrounded by at hospital; to be surrounded
-∞<χ2<+∞ -∞<χ2<0 0χ2<+∞ -1<χ2<1 χ2≤1
两个样本率的比较可用μ检验也可用χ2检验 两个样本均数的比较可用μ检验也可用χ2检验 对于多个率或构成比的比较,μ检验可以替代χ2检验 对于两个样本率的比较,χ2检验比μ检验可靠 以上均不正确
Surrounded Surrounding To be surrounded To be surrounding
χ2增大,P值减小 χ2减小,P值也减小 χ2增大,P值也增大 χ2减小,P值增大 视数据不同而异
surrounding surrounded surrounded by surrounding by