[問題] 迴歸分析的交互作用項
雖然讀了兩年的統計
但在執行迴歸分析時
還是有很多疑問想請問各位大大QAQ
Q1:假設自變數有A.B兩個,若想探討因子間的交互作用,
迴歸式中是否只要納入 A. B. A*B 三個變項即可呢?
Q2:課本上提到交互作用項時,都是以相乘來表示,是否能用相除表示呢?
也就是,是否能將 A. B. A/B 納入迴歸式中執行迴歸分析呢?
謝謝各位版大的幫忙!!
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