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RASL_Ex1.r

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RASL_Ex1.r 358 B

#Exercise 2

#a) 
pickup=read.csv("pickup.csv",header=TRUE)
attach(pickup)
plot(pickup)

#b)
#linear model
linearmodel=lm(log(price)~.,data=pickup)
summary(linearmodel)

#model diagnostics
plot(linearmodel)

#c)
#adding interaction terms
linearmodel2=lm(log(price)~year+miles+make+make*miles+make*year,data=pickup)
summary(linearmodel2)

plot(linearmodel2)