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Copy of Assignment 4.txt

Copy of Assignment 4.txt - library(ISLR fix(Auto?Auto...

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library(ISLR) fix(Auto) ?Auto attach(Auto) plot(horsepower, mpg) auto.lm = lm(mpg~ horsepower) abline(auto.lm,col="blue") summary(auto.lm) #lm.auto = lm(horsepower~mpg, data = Auto) newdata=data.frame(horsepower=98) predict(auto.lm, newdata, interval = "predict") predict(auto.lm, newdata, interval = "confidence") par(mfrow = c(2,2)) plot(auto.lm) lm.fit2 = lm(mpg ~.-name+I((horsepower)^2)+log(horsepower)+I(sqrt(horsepower)) +horsepower:mpg, data = Auto) #lm.fit=lm(mpg~horsepower+I((horsepower)^2)+log(horsepower)+I(sqrt(horsepower)) +horsepower:mpg, data = Auto) summary(lm.fit2)
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