How to Win a Game (or More) of Super Six
We use simulation to analyse the family dicing game “Super Six”. In particular we show that the person starting the game has a very high chance of winning the game....continue reading.
Author: Theory meets practice...
Tupper’s Self Referential Formula in R
Abstract: We implement Tupper’s self-referencing formula in R. This has been done before by others, but the joy was to be able to learn how to do it yourself using...continue reading.
Anthropometric Birthday Cards
Abstract: We visualize children reference populations for height, weight and body mass index by plotting percentiles of the population as a function of age. Besides the epidemiological interest in these...continue reading.
An R Package for Social Roulette
Abstract: We introduce the R package socialroulette, which is a lightweight package for handling the recurrent problem of assigning individuals into groups of a fixed size. In order to minimize...continue reading.
Long time, no see: Virtual Lunch Roulette
When distributing individuals into groups every week for a virtual social mixer, e.g. using Zoom breakout rooms, it’s boring to end up in a group with someone, who you already met...continue reading.
Age-Structure Adjusted All-Cause Mortality
Abstract: This page is an updated version of the 2020-12-28 blog post Age Stratified All-Cause and COVID-19 Associated Mortality. The post considers the age stratified all-cause and COVID-19 associated mortality...continue reading.
Age Stratified All-Cause and COVID-19 Associated Mortality
Abstract: We consider the age stratified all-cause and COVID-19 associated mortality in Germany during 2020 based on numbers provided by the Federal Statistical Office and the Robert Koch Institute. This...continue reading.
The Mathematics and Statistics of Infectious Disease Outbreaks
Abstract: Slides, R code and video lectures of our 2020 The Mathematics and Statistics of Infectious Disease Outbreaks summer course at Stockholm University are made available to a wider audience....continue reading.
Risk Scoring in Digital Contact Tracing Apps
Abstract: We attempt a mathematical description of the risk scoring algorithm used in the Google and Apple exposure notification framework (v1). This algorithm is used in many digital contact tracing...continue reading.
Superspreading and the Gini Coefficient
Abstract: We look at superspreading in infectious disease transmission from a statistical point of view. We characterise heterogeneity in the offspring distribution by the Gini coefficient instead of the usual...continue reading.
Effective reproduction number estimation
We discuss the estimation with R of the time-varying effective reproduction number during an infectious disease outbreak such as the COVID-19 outbreak. Using a single simulated outbreak we compare the...continue reading.
Flatten the COVID-19 curve
Abstract: We discuss why the message of flattening the COVID-19 curve is right, but why some of the visualizations used to show the effect are wrong: Reducing the basic reproduction...continue reading.
Scraping the Sugarcoat
Abstract: Web-scraped data are used to put a Rubik’s cube competition result into perspective. The sugarcoating consists of altering the sampling frame of the comparison to the more relevant population...continue reading.
Speedmining the Cubing Community with dbplyr
We use the RMariaDB and dbplyr packages to analyze the results database of the World Cubing Association. In particular we are interested in finding unofficial world records of fastest 3x3x3...continue reading.
A Shiny app for your perfect circle
Abstract: The perfect circle is a shiny app providing a user friendly interface to the algorithm described in the previous blog post Judging Freehand Circle Drawing Competitions. The app allows...continue reading.
Purr yourself into a math genius
Abstract: We use the purrr package to solve a popular math puzzle via a combinatorial functional programming approach. A small shiny app is provided to allow the user to solve...continue reading.
Is the answer to everything Gaussian?
Abstract: As an applied statistician you get in touch with many challenging problems in need of a statistical solution. Often, your client/colleague already has a working solution and just wants...continue reading.
Judging Freehand Circle Drawing Competitions
Abstract: In 2007 Alexander Overwijk went viral with his ‘Perfect Circle’ video. The same year a World Freehand Circle Drawing Championship was organized, which he won. In this post we...continue reading.
Amazon’s Hanging Cable Problem (Golden Gate Edition)
Abstract: In this post we use R’s capabilities to solve nonlinear equation systems in order to answer an extension of the hanging cable problem to suspension bridges. We then use...continue reading.
World Income, Inequality and Murder
Abstract: We follow up on last weeks post on using Gapminder data to study the world’s income distribution. In order to assess the inequality of the distribution we compute the...continue reading.
