R is open source which makes it a first choice for students, universities & researchers. With over 2 million users world wide, the enhancements & updates to the product outsmart the pace at which the business world is upgrading. Other statistical tools can perform a lot of statistical analysis, however, R can perform ALL the statistical analysis which can be done by all other statistical tools put together. All this come for free as there is no license cost for R.

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R is explained in depth here. You will learn Introduction to R Programming, Essentials of R Language, Data Inputs, Data Frames, Graphics,Tables, Mathematics,Classical Tests and a lot more.