Creating and manipulating combine: c cbind: combine as columns rbind: combine as rows list: make a list rep(x,n): repeat x n times seq(a,b,i): create a sequence between a and b in increments of i seq(a,b, length=k): create a sequence between a and b with length k with equally spaced increments
Probability Distributions Normal: rnorm(N,m,s): generate random normal data dnorm(x,m,s): density at x for normal with mean m, std dev s qnorm(p,m,s): quantile associated with cumulative probability of p for normal with mean m, std dev s pnorm(q,m,s): cumulative probability at quantile q for normal with mean m, std dev s Binomial rbinom etc.
Libraries Additional packages that can be loaded Example: epitools library library(help=[libname])
Keeping things tidy ls() and objects() rm() rm(list=ls())
Future Topics linear regression sourcing R code creating functions organizing R files