Data Analytic Tools, Tips & Cheat Sheets

These quick tips & cheat sheets are great references to help you get started quickly.
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Tools and Cheat Sheets to Help you Get Started

JavaScript

Cheat Sheets for Java

Linux

Linux Cheat Sheet

Python

Cheat Sheets for Python

NumPy, SciPy and Pandas

R

Cheat Sheets for R

Short Reference Card

R Functions for Regression Analytics

Time Series

Data Mining

Quandl

SQL

SQL Joins

SQL and Hive

Cross Reference between

R, Python (and Matlab)