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Generalized linear functions (Beginners)

September 16, 2017
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Generalized linear functions (Beginners)

On this set of exercises, we are going to use the lm and glm functions to perform several generalized linear models on one dataset. Since this is a basic set of exercises we will take a closer look at the arguments of these functions and how to take advantage of the output of each function Related exercise sets: Forecasting: Linear...

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Probability functions advanced

September 14, 2017
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Probability functions advanced

In this set of exercises, we are going to explore some applications of probability functions and how to plot some density functions. The package MASS will be used in this set. Note: We are going to use random numbers functions and random processes functions in R such as runif. A problem with these functions is Related exercise sets: Probability functions...

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Probability functions intermediate

August 31, 2017
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Probability functions intermediate

In this set of exercises, we are going to explore some of the probability functions in R by using practical applications. Basic probability knowledge is required. In case you are not familiarized with the function apply, check the R documentation. Note: We are going to use random numbers functions and random processes functions in R Related exercise sets: Lets Begin...

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Probability functions beginner

August 17, 2017
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Probability functions beginner

On this set of exercises, we are going to explore some of the probability functions in R with practical applications. Basic probability knowledge is required. Note: We are going to use random number functions and random process functions in R such as runif, a problem with these functions is that every time you run them Related exercise sets: Hacking statistics...

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Character Functions (Advanced)

May 18, 2017
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Character Functions (Advanced)

This set of exercises will help you to help you improve your skills with character functions in R. Most of the exercises are related with text mining, a statistical technique that analyses text using statistics. If you find them interesting I would suggest checking the library tm, this includes functions designed for this task. There Related exercise sets:Regular Expressions...

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Basic Operations Exercises

October 23, 2016
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Basic Operations Exercises

This set of exercises will help you to learn and test your skill with basic arithmetical operations and logic functions. Before proceeding, it might be helpful to look over the help pages for the **, %/%, %%, and the logical operators such as !=, ==, __=, isTRUE . Answers to the exercises are available here.

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Advanced Base Graphics Exercises

September 23, 2016
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Advanced Base Graphics Exercises

Being able to visualize information through plots is essential for a statistic analysis. A simple and clean graph  can explain much more than words.  In this set of exercises you will test and learn advanced graphic arguments. Before you start check the documentation for the following functions: plot, points, abline, title, legend ,par (including all the arguments), mfrow and layout For

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Examining Data Exercises

September 6, 2016
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Examining Data Exercises

One of the first steps of data analysis is the descriptive analysis; this helps to understand how the data is distributed and provides important information for further steps. This set of exercises will include functions useful for one variable descriptive analysis, including graphs. Before proceeding, it might be helpful to look over the help pages

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Matrix Operations Exercises

August 22, 2016
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Matrix Operations Exercises

This set of exercises will help you to learn and test your skill in matrix operations, starting with basic ones like scalar multiplication all the way through eigenvalue and eigenvectors. Before proceeding, it might be helpful to look over the help pages for the diag, t, eigen, and crossprod functions. If you want further documentation

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