Introduction to R programming & RStudio for beginners

(Please note: this course is a basic introduction to R and RStudio, meant for beginner level. More advanced courses coming soon.)

R is currently one of the most requested programming languages in the Data Science job market that makes it the hottest trend nowadays.

R is a programming language and free software environment for statistical computing, data manipulation & analysis, graphics representation and reporting supported by the R Foundation for Statistical Computing. The R language is widely used among statisticians and data miners for developing statistical software and data analysis. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS.

No one is born a data scientist. Every person who works with R today was once a complete beginner. No matter how much you know about the R ecosystem already, you’ll always have more to learn.

Applications of R:

    We use R for Data Science. It gives us a broad variety of libraries related to statistics. It also provides the environment for statistical computing and design.

    R is used by many quantitative analysts as its programming tool. Thus, it helps in data importing and cleaning.

    R is the most prevalent language. So many data analysts and research programmers use it. Hence, it is used as a fundamental tool for finance.

    Tech giants like Google, Facebook, bing, Accenture, Wipro and many more using R nowadays.

Why R Programming Language?

    R programming is used as a leading tool for machine learning, statistics, and data analysis. Objects, functions, and packages can easily be created by R.

    It’s a platform-independent language. This means it can be applied to all operating system.

    It’s an open-source free language. That means anyone can install it in any organization without purchasing a license.

    R programming language is not only a statistic package but also allows us to integrate with other languages (C, C++). Thus, you can easily interact with many data sources and statistical packages.

    The R programming language has a vast community of users and it’s growing day by day.

Statistical Features of R:

    Basic Statistics: The most common basic statistics terms are the mean, mode, and median. These are all known as “Measures of Central Tendency.” So using the R language we can measure central tendency very easily.

    Static graphics: R is rich with facilities for creating and developing interesting static graphics. R contains functionality for many plot types including graphic maps, mosaic plots, biplots, and the list goes on.

    Probability distributions: Probability distributions play a vital role in statistics and by using R we can easily handle various types of probability distribution such as Binomial Distribution, Normal Distribution, Chi-squared Distribution and many more.

R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, etc) 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.

One of R’s strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed.

R, like S, is designed around a true computer language, and it allows users to add additional functionality by defining new functions. Much of the system is itself written in the R dialect of S, which makes it easy for users to follow the algorithmic choices made. For computationally-intensive tasks, C, C++ and Fortran code can be linked and called at run time. Advanced users can write C code to manipulate R objects directly.

R & RStudio includes

    an effective data handling and storage facility,

    a suite of operators for calculations on arrays, in particular matrices,

    a large, coherent, integrated collection of intermediate tools for data analysis,

    graphical facilities for data analysis and display either on-screen or on hardcopy, and

    a well-developed, simple and effective programming language which includes conditionals, loops, user-defined recursive functions and input and output facilities.

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Frequently Asked Questions

How long do I have access to the course materials?

You can view and review the lecture materials indefinitely, like an on-demand channel.

Can I take my courses with me wherever I go?

Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don’t have an internet connection, some instructors also let their students download course lectures. That’s up to the instructor though, so make sure you get on their good side!