R
Apa itu R?

R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R.

Yah itulah kira-kira R (disalin dari http://www.r-project.org/).  Sebuah software statistika yang gratis dan public license. Pastinya software ini punya kelebihan lain dibanding software lainnya (SAS, Minitab, SPSS, dll) terutama karena gratisnya itu.

R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, …) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity.

Kita juga bisa mengembangkan software ini, misalnya dengan membuat package-package baru yang tentunya dapat memudahkan dalam analisis data. Saat ini, sudah 1713 package yang terdaftar dan dapat didownload gratis di situs resmiya ditambah yang belum terdaftar. Bagi yang mau belajar, silahkan mulai dari sekarang. Download-Install-Belajar deh. Mulai dari pengenalan objek di R. Bisa dibaca disini. Saya sendiri masih tahap belajar. Ayo belajar R!