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Update Jan 17, 2017： Ruilong Xu （徐瑞龙） warned me that 商務處智利中國 is 商务处智利中国 in traditional characters. Thanks for the correction，Ruilong！ I still don't have 2016's official trade numbers，sorry。I also moved to an open typography to write in simplified chinese and I added some ggplot2 v2.2 new features。 Before we start My chinese ... [Read more...]

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For a couple of years, I’ve been writing about the importance of data analysis, saying that data analysis is essentially the foundation of data science itself. While I admit that there’s room for argument (and I admit that the reality is a little more nuanced) I still firmly ... [Read more...]

Our newest course, Object-Oriented Programming in R: S3 and R6 taught by Richie Cotton is now available! Object-oriented programming (OOP) lets you specify relationships between functions and the objects that they can act on, helping you manage comple... [Read more...]

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A solution in the R language for statistical computing to find the solution the Euler Problem 7: Find the 10,001st prime number. Continue reading → The post Euler Problem 7: 10,001st Prime appeared first on Data Science with R. [Read more...]

by Angelika Stefan & Felix Schönbrodt When reading about Bayesian statistics, you regularly come across terms like “objective priors“, “prior odds”, “prior distribution”, and “normal prior”. However, it may not be intuitively clear that the meaning of “prior” differs in these terms. In fact, there are two meanings of “prior” ... [Read more...]

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Multilevel regression with poststratification (MrP) is a useful technique to predict a parameter of interest within small domains through modeling the mean of the variable of interest conditional on poststratification counts. This method (or methods) w... [Read more...]

This note lists a few of the organizations that are pushing the R language forward, as of early 2017. R is a happy language right now. Historically, the R Project for Statistical Computing has been supported by the R Foundation since its inception in... [Read more...]

This note lists a few of the organizations that are pushing the R language forward, as of early 2017. R is happy language right now. Historically, the R Project for Statistical Computing has been supported by the R Foundation since its inception in 2... [Read more...]

Yesterday afternoon, the nineth update in the 0.12.* series of Rcpp made it to the CRAN network for GNU R. Windows binaries have by now been generated; and the package was updated in Debian too. This 0.12.9 release follows the 0.12.0 release from late July, the 0.12.1 release in September, the 0.12.2 release in November, ... [Read more...]

In the exercises below we cover some material on multiple regression in R. Answers to the exercises are available here. If you obtained a different (correct) answer than those listed on the solutions page, please feel free to post your answer as a comment on that page. We will be ... [Read more...]

After the success of last January’s “Shiny Dev Con“, our friends at RStudio are back with their first full-blown conference, “rstudio::conf“. Like our own EARL Conference, rstudio::conf was preceeded by training courses from 3 of RStudio’s big names, Hadley Wickham, … Continue reading → [Read more...]

We are celebrating the 1st anniversary of the survminer’s release on CRAN! Due to that fact I have prepared the most (uber platinum) customized survival plot that I could imagine. I went too far because it took over 30 parameters to create a graph..... [Read more...]

A comparison between using a loop, function by and the package dplyr - One of the first examples about using linear regression models in finance is the calculation of betas, the so called market model. Coefficient beta is a measur... [Read more...]

A strategy for gathering scattered spreadsheet data with R - A simple request Recently I was tasked with extracting data from multiple spreadsheets so that it could be included in a report. Seemed like a fairly innocuous request, but it tur... [Read more...]