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noapp
2012 Jan 19
3
What does the : operator mean in glm formulas
Hi,
I see the following is the credit scoreing in R guide :
m2<-glm(formula = good_bad ~ checking + duration + history+ purpose +amount + savings + employed + installp + marital +
coapp +age + other + depends + telephon + foreign +checking:amount
What does checking:amount mean?
Regards,
Xiaobo Gu