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# R Language Course Content

1. ## Overview

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.

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.

2. ## R Language Course Outline

Overview of R Programing. Why R Programing?
• R Programing Environment setup
• R - Reserved Words
• R - Variables and Constants
• R - Operators
• R - Programming if...else
• R - Programming for loop
• R - while Loop
• R - break & next
• R - repeat Loop

Functions
• Function Return Value
• R - Environment & Scope
• R - Recursive Function
• R - Switch Function
• R - String Handling

R - Vectors
• R - Lists
• R - Matrices
• R - Arrays
• R - Factors
• R - Data Frames
• R - Packages
• R - Data Reshaping

Data Import/Export (ETL)
• R - CSV Files
• R - Excel Files
• R - Binary Files
• R - XML Files
• R - Web Data
• R - Database

My SQL Server - Database Envrionment
• DDL Statement
• DML Statement
• Where clause, Operator
• Order By
• Function
• Group By, Having
• Data type
• Constrains/Integrity
• Subquery
• Union
• Join

Basic Data Visualization
• R - Pie Charts
• R - Bar Charts
• R - Boxplots
• R - Histograms
• R - Line Graphs
• R - Scatterplots

Advanced Data Visualization
• Heat Map
• Mosaic Map
• Map Visualization
• 3D Graphs
• Correlogram

Statistics
• R - Mean, Median & Mode
• R - Linear Regression
• R - Multiple Regression
• R - Logistic Regression
• R - Normal Distribution
• R - Binomial Distribution
• R - Time Series Analysis

Statistics – Extended
• R - Nonlinear Least Square
• R - Decision Tree
• R - Random Forest
• R - Survival Analysis
• R - Chi Square Tests

R Text Mining
• Loading Texts
• Preprocessing
• Stage the Data
• Explore your data
• Focus!
• Word Frequency
• Plot Word Frequencies

Relationships Between Terms
• Term Correlations
• Word Clouds!
• Clustering by Term Similarity
• Hierarchal Clustering
• K-means clustering

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