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library(ISLR)
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summary(Auto)
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fit1 <- lm(mpg ~ horsepower, data = Auto)
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summary(fit1)
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plot(mpg ~ horsepower, data = Auto)
abline(fit1, col = "red")
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names(fit1)
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confint(fit1)
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predict(fit1, data.frame(horsepower = c(98)), interval = "confidence")
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predict(fit1, data.frame(horsepower = c(95)), interval = "prediction")
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par(mfrow = c(2,2))
plot(fit1)