Blog

 

Useful R snippets

R
A collection of useful R snippets
Sep 21, 2024

 

Formatting numbers

R
function
A showcase of the function I use to format numbers.
May 17, 2024

The metalog distribution

statistics
distributions
simulation
I recently discovered the metalog distribution via MakeDistribution. According to Wikipedia, the metalog distribution “is a flexible continuous probability distribution…
Apr 9, 2024

 

Predicting values of intercept only models

statistics
prediction
A post on how to predict values of intercept-only models.
Mar 18, 2024

Sad wild animal facts

wild animals
wild animal suffering
A collection of facts about wild animals that make me sad.
Mar 11, 2024

Bayesian tutorial: Two groups

statistics
tutorial
Bayesian statistics
regression
The fourth of a series of tutorial posts on Bayesian analyses. In this post I focus on using brms to model the difference between two groups.
Apr 24, 2023

Bayesian tutorial: Correlation

statistics
tutorial
Bayesian statistics
regression
The third of a series of tutorial posts on Bayesian analyses. In this post I focus on using brms to model a correlation.
Feb 12, 2023

Bayesian tutorial: Single predictor regression

statistics
tutorial
Bayesian statistics
regression
The second of a series of tutorial posts on Bayesian analyses. In this post I focus on using brms to run a regression with a single predictor.
Feb 2, 2023

Bayesian tutorial: Intercept-only model

statistics
tutorial
Bayesian statistics
regression
The first of a series of tutorial posts on Bayesian analyses. In this post I focus on using brms to run an intercept-only regression model.
Feb 1, 2023

Voting behavior of Dutch political parties on animal welfare motions

animal welfare
data cleaning
APIs
politics
Not too long ago the House of Representatives of The Netherlands released a public portal to a lot of their data. The portal contains data on law proposals, motions…
Sep 24, 2022

Animals slaughtered in the Netherlands

animal welfare
data cleaning
data visualization
In this post I take a look at how many animals are slaughtered in the Netherlands. The goal is to find and clean the data to answer this question and to get a better grasp…
Sep 18, 2022

Simulation-based power curves

power analysis
simulation
statistics
In a previous post I covered how to perform simulation-based power analyses. A limitation in that post is that usually the question is not what our power is, but rather…
Nov 9, 2021

Simulation-based power analyses

statistics
power analysis
simulation
Simulation-based power analyses make it easy to understand what power is: Power is simply counting how often you find the results you expect to find. Running simulation-based power analyses might be new for some, so in this blog post I present code to simulate data for a range of different scenarios.
Oct 23, 2021

 

The right order of method sections

writing
statistics
power analysis
Method sections in academic (psychology) papers usually consist of the following sections: Participants, Design, Procedure, and Materials. They also tend to be presented in this order. But is this, generally speaking, the right order? I don’t think so.
Jul 8, 2021

A tidystats example

tidystats
statistics
tutorial
I illustrate how to use my tidystats software to analyze and report the results of a replication study that was part of the Many Labs 1 project.
Apr 25, 2021

Why divide by \(n - 1\) to calculate the variance of a sample?“

statistics
In a recent tweet I asked the question why we use \(n - 1\) to calculate the variance of a sample. Many people contributed an answer, but many of them were of the type I feared. Most consisted of some statistical jargon that confuses me more, rather than less. Other responses were very useful, though, so I recommend checking out the replies to the tweet. In this post, I will try to describe my favorite way of looking at the issue.
Aug 5, 2020

 

Useful power analysis papers

statistics
power analysis
A curious thing happened in the field of social psychology: Social psychologists finally realized that statistical power is important. Unfortunately, they then skipped the step of figuring out how to do them correctly. Here I list some papers on power analyses that I hope help in improving the way we do them.
Aug 1, 2020

Understanding regression (part 1)

statistics
tutorial
regression
This is Part 1 of a series of blog posts on how to understand regression. The goal is to develop an intuitive understanding of the different components of regression. In this first post, we figure out where the estimate of an intercept-only regression model comes from.
Aug 1, 2020
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