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data1<-read.csv(file.choose())
library(ggplot2)
ggplot(data1,aes(x=bwt,fill=factor(data1$smoke)))+
geom_histogram(binwidth=400,position="dodge",color="black")+
ggtitle("R2-13")+xlab("birthweight")+
scale_fill_discrete(h=c(0,200),c=400,name="Smoke",labels=c("No","Yes"))
data(diamonds)
library(ggplot2)
ggplot(diamonds,aes(x=carat,color=color))+
geom_line(stat="density")+
ggtitle("R2-13")+xlab("price")+theme_bw()
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