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How do you interpret coefficient of binary variable in linear regression?
Wiki User
∙ 16y ago
This is my best shot. I've been trying to find this answer since I'm doing regressions right now.
Let's say you have a dummy variable "male" where 1 = male, 2 = female.
You regress:
toads_owned = c(1) + c(2)*male
You get the result:
MALE:
Coefficient: 2
T-test: 3.1
toads_owned = c(1) + 2*male
So now, I think that means that if you are a male, you are likely to own 2 more toads on average than if you were a female.
The coefficient on a dummy variable simply says how different you are from the base group (the group that equals 0) if you equal 1.
Wiki User
∙ 16y ago
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