R Basics

Objective: learn some R basics.

Online interactive course

Recommanded: Go to tryr, an online interactive course (that does not require any R installation). Required time: about 40 min

R language cheat sheets

• Recommanded: R base cheat sheet
• R Cran reference card for intermediate users

Some good online books to learn R

• Introduction to R
• R for data science

R documentation/help

It is very helpful to use the R-documentation

Check the documentation to know how to use a specific function:

?mean

Search the help files for a word or phrase.

help.search("weighted mean")

Ask your friend google… he will take care of you (and your data)!

R Cran weighted mean

I always write R Cran instead of R alone because it works better.