Useful R Functions

From ECON 520

(Please feel free to add more!)

sin -- sine

cos -- cosine

tan -- tangent

exp -- exponential

log -- log (natural log by default)

sqrt -- square root

factorial -- factorial

choose -- binomial coefficient

gamma -- gamma function

c -- concatenate (create vector)

sum -- sum of element of vector

mean -- sample average

sd -- sample standard deviation

dunif -- uniform PDF

punif -- uniform CDF

runif -- random draws from uniform distribution

dnorm -- normal PDF