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In [ ]: library(ggplot2) qplot(wt, mpg, data=mtcars, geom=c('point', 'smooth'), color=cyl, main='Regression of MPG on Weight', xlab='Weight', ylab='Miles per Gallon');
library(ggplot2) qplot(wt, mpg, data=mtcars, geom=c('point', 'smooth'), color=cyl, main='Regression of MPG on Weight', xlab='Weight', ylab='Miles per Gallon');
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