## Introduction to R ## R is a calculator 2 + 3 ## You can create variables in R x <- 7.3 y <- pi print(y, digits = 15) ## R can be used as an object oriented language ## This means all objects have classes ## and methods can be written for each class class(x) x <- 1:20 y <- x * 3 + rnorm(20, sd = 2) xyplot(y ~ x) fit <- lm(y ~ x) fit class(fit) names(fit) summary(fit)