Created
July 2, 2020 18:32
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| mtcars$vs.f <- ifelse(mtcars$vs == 0, "0", "1") | |
| mtcars.0 <- subset(mtcars, vs.f == "0") | |
| mtcars.1 <- subset(mtcars, vs.f == "1") | |
| coef(lm(mpg ~ cyl * vs.f, data = mtcars)) # association between 1 should be strong | |
| coef(lm(mpg ~ cyl, data = mtcars.0)) # association between 0 smaller | |
| coef(lm(mpg ~ cyl, data = mtcars.1)) # association between 1 larger | |
| cor(mtcars.0$mpg, mtcars.0$cyl) | |
| cor(mtcars.1$mpg, mtcars.1$cyl) |
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