On the 1st of september we launched R course finder, an online directory that helps you to find the right R course quickly. With so many R courses available online, we thought it was a good idea to offer a tool that helps people to compare these courses, before they decide where to spend their […]

## Descriptive Analytics-Part 2 : Data Imputation

Descriptive Analytics is the examination of data or content, usually manually performed, to answer the question “What happened?”. In order to be able to solve this set of exercises you should have solved the part 0 and’part 1 of this series, in case you haven’t you can find the solutions to run them in your […]

## Regular Expressions Exercises – Part 1

A common task performed during data preparation or data analysis is the manipulation of strings. Regular expressions are meant to assist in such and similar tasks. A regular expression is a pattern that describes a set of strings. Regular expressions can range from simple patterns (such as finding a single number) thru complex ones (such […]

## Clickstream Data, R Graph Gallery, and a package that will instantly increase your karma points at work!

To stay on top of R in the news, we’re sharing some stories related to R published last week. The R Graph Gallery Has Made a Combeback(Yan Holtz) I must admit, the first edition of this gallery must have been before my time! Announced here, I was immediately most intrigued by what obscure visualizations were […]

## Descriptive Analytics-Part 1: Data Formatting Exercises

Descriptive Analytics is the examination of data or content, usually manually performed, to answer the question “What happened?”. In order to be able to solve this set of exercises you should have solved the ‘part 0’ of this series, in case you haven’t you can find the solutions to run them in your machine here. […]

## 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. […]

## The Worlds Economic Data, Shiny Apps and all you want to know about Propensity Score Matching!

To stay on top of R in the news, we’re sharing some stories related to R published last week. Interactive Data Visualization Using the Shiny App!(Saurav Kaushik) This is one of the best tutorials on Shiny that I have seen, and anything that says interactive next to data visualization really should get the top story […]

## Network Analysis Part 3 Exercises

This is the third set of exercises on networks in which we practice the functions for graph structure, using package igraph. The first and second part are available here: Part 1 Part 2 If you don’t have package already installed, install it using the following code: install.packages(“igraph”) and load it into the session using the […]

## Descriptive Analytics – Part 0 : data exploration

Descriptive Analytics is the examination of data or content, usually manually performed, to answer the question “What happened?”. This is the first set of exercise of a series of exercises that aims to provide a descriptive analytics solution to the ‘2008’ data set from here. Download it and save it as a csv file. This […]

## Two Way ANOVA in R Exercises

One way analysis of variance helps us understand the relationship between one continuous dependent variable and one categorical independent variable. When we have one continuous dependent variable and more than one independent categorical variable we cannot use one way ANOVA. When we have two independent categorical variable we need to use two way ANOVA. When […]