用spss做正交试验方差分析,结果出来Warnings Post hoc tests are not performed for NAA because error tWarningsPost hoc tests are not performed for NAA because error term has zero degrees of freedom.Post hoc tests are not performed for BA be
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用spss做正交试验方差分析,结果出来Warnings Post hoc tests are not performed for NAA because error tWarningsPost hoc tests are not performed for NAA because error term has zero degrees of freedom.Post hoc tests are not performed for BA be
用spss做正交试验方差分析,结果出来Warnings Post hoc tests are not performed for NAA because error t
Warnings
Post hoc tests are not performed for NAA because error term has zero degrees of freedom.
Post hoc tests are not performed for BA because error term has zero degrees of freedom.
什么意思 哪里出错了 谢谢高手帮一下忙
用spss做正交试验方差分析,结果出来Warnings Post hoc tests are not performed for NAA because error tWarningsPost hoc tests are not performed for NAA because error term has zero degrees of freedom.Post hoc tests are not performed for BA be
可能你对contrast的意义理解错了,在one way anova中的contrast是对数据进行趋势成分分析,意义是考虑将组间偏差平方和分解为线性、二次、三次或更高次的趋势成分.举个例子吧,如果是比较三个不同民族的经济收入是否有差异如果你选用contrast的一次的话,就是看三个不同民族经济收入均值是否具有线性趋势,这有点类似于回归.
而在post hoc中,是对三者的均值两两比较,看是哪一组或几组是具有差异的.
而在univariate中,contrast的比较分为deviation \ simple \ difference \ helmert \repeated 等等不同的比较方式 ,可以进行均值比较,方差比较,也可以进行多项式比较.
post hoc对组间均值比较方法更为多样,可以选择两两比较,也可以选择比较后分组,具体要看你的用途了.