September 2020

How joyful were the Friends main characters?

September 8, 2020 | » R

(Tidy Tuesday is a project to supply weekly data sets for R users to practice their coding skills on. You can find full details here.) This week’s Tidy Tuesday dataset makes use of the friends package put together by Emil Hvitfeldt. It contains ...
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Fake Data with R

September 8, 2020 | R Views

Simulation is the foundation of computational statistics and a fundamental organizing principle of the R language. For example, few complex tasks are more compactly expressed in any programming language than rnorm(100). But while... [Read more...]

Embedding flexdashboard in pkgdown site

September 7, 2020 | Rami Krispin

In the previous post, I demonstrated how to deploy a flexdashboard dashboard (or basically, any R Markdown format) in Github Pages. The focus of this post is on embedding flexdashboard oin pkgdown site. The pkgdown package is another great R Markdow... [Read more...]

Introduction to Stan in R

September 7, 2020 | Rstats on pi: predict/infer

This blog post will talk about Stan and how to create Stan models in R using the rstan and rstanarm packages. Although Stan provides documentation for using its programming language and a user’s guide with examples, it can be difficult to follow for a ...
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GSOC Wrap Up

September 7, 2020 | R on Chemometrics & Spectroscopy using R

Well, things have been busy lately! As reported back in May, I’ve been participating in Google Summer of Code which has now wrapped up. This was very rewarding for me, but today I want to share a guest post by Erick Oduniyi, the very talented...
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Embedding flexdashboard in pkgdown site

September 7, 2020 | Rami Krispin

In the previous post, I demonstrated how to deploy a flexdashboard dashboard (or basically, any R Markdown format) in Github Pages. The focus of this post is on embedding flexdashboard oin pkgdown site. The pkgdown package is another great R Markdow... [Read more...]

The Intercept Fallacy

September 7, 2020 | jmount

A common mis-understanding of linear regression and logistic regression is that the intercept is thought to encode the unconditional mean or the training data prevalence. This is easily seen to not be the case. Consider the following example in R. library(wrapr) We set up our example data. # build our […] [Read more...]

0.83 is a Special AUC

September 6, 2020 | jmount

0.83 (or more precisely 5/6) is a special Area Under the Curve (AUC), which we will show in this note. For a classification problem a good probability model has two important properties: The model is well calibrated. When the model says there is a p-probability of being in the class, […]
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COVID-19s Impact on the NYC Subway System

September 6, 2020 | R | JLaw's R Blog

At 8pm on March 22nd, 2020, the “New York State on PAUSE” executive order became effective and New York City went on lockdown until June 8th, when the Phase 1 reopening began. During this time usage of the public transit systems had a sudden drop as all non-essential services needed to close. ...
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Baby Weight Shiny app

September 6, 2020 | Dr. Shirin Elsinghorst

Alright, this is it: I am officially back! :-D I have not written any blogposts for over a year. Last year, I had the cutest baby boy and ever since then, I did not get around to doing much coding. One of the reasons was that, unfortunately, we did not...
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