2024
Working with list columns - an example
2024-10-13
Benötigte R-Pakete für ein Projekt prüfen
2024-10-11
Dead Man Bias in correlation
2024-03-05
Adjust labels in ggplot
2024-02-25
Dictionaries in R
2024-02-17
Using dynamic variables in ggplot2 for facetting and more
2024-02-04
Prevent dropping from non-occuring levels using dplyr
2024-01-30
Simulating multiple event collision
2024-01-29
Numerical similarity of some Bayes and Classical models
2024-01-29
Using quizzes on markdown html sites
2024-01-18
Simple contingency tables in R
2024-01-12
2023
Logistic regression using z-standardized values
2023-12-20
Testing if return value is in tolerance
2023-12-13
Unicode in R und in Markdown
2023-11-22
Speed test for parallel processing
2023-11-15
normal distribution animated
2023-11-04
normal densities animanted
2023-11-04
Gantt-Diagramme mit ganttrify
2023-09-22
Filtering vectors in R
2023-07-15
Farbpaletten für nominale Variablen
2023-06-30
Estimating simulation variance in Stan models
2023-03-17
Tables, plotted as ggplot objects
2023-02-03
Playing around with spirographs
2023-01-30
Differences according to importing CSV using different functions
2023-01-19
Setting to NA, conditionally
2023-01-16
A quick demo how to compute rowwise means with the tidyverse
2023-01-16
2022
Consistency of set.seed across different systems
2022-12-13
Plot timelines using ggplot
2022-11-30
Accessing Google Trends
2022-11-04
Programmatically plotting with ggplot2
2022-09-28
Some ways to plot the distribution of each variable of a data frame
2022-09-26
Great open-access data sets of public interest
2022-09-12
FontAwesome in R and R Markdown
2022-07-27
FontAwesome in ggplot
2022-07-27
Preparing German weather data
2022-07-24
Penguins Lasso with Tidymodels
2022-07-24
Minimal tidymodels example with the Lasso
2022-07-24
German weather
2022-07-24
Free resources for aspiring data adepts
2022-06-13
Vorher-Nachher-Messung und Vergleich zwischen Gruppen
2022-06-04
Ableitung der Koeffizienten der einfachen Regression
2022-05-23
A simple solution to ditch the question "what's the path of my data" when importing data to R
2022-05-11
Importing data into R
2022-05-11
Rowwise NA
2022-05-09
Comparing Jamovi and rstanarm
2022-05-09
Kontigenztabellen in R
2022-05-02
Energie sparen (!)
2022-05-02
Empirische Verteilungsfunktion
2022-05-02
3D Regression plane with scatter plot
2022-04-19
Median minimiert Absolutabweichungen
2022-04-08
Das arithmetische Mittel minimiert die Abweichungsquadrate
2022-04-08
Visualizing variation in data, simple ideas
2022-04-02
Simple nomnoml in R examples
2022-04-02
How to import GoogleSheets into R
2022-04-02
Simulation des wiederholten Stichprobenziehens
2022-03-28
Streaming aus den Hörsaal, ein einfacher Ansatz
2022-03-23
Programming the tidyverse: quoted and unqouted parameters
2022-03-11
Data sets for for teaching
2022-02-23
Die logististische Regression (glm) modelliert die zweite Stufe
2022-02-11
tidyeval, some musings on dplyr::filter
2022-02-09
Checking Moodle test log data
2022-02-08
Erbie: Einfache, reproduzierbare Beispiele Ihres Problems mit (R-)Syntax
2022-01-31
Wissenschaftliche Notation in R an und ausstellen
2022-01-28
Kurs: "Vorhersage-Modellierung"
2022-01-28
Kurs "Bayes:Start"
2022-01-28
Bayes-Software installieren für R
2022-01-28
Bayes in fünf Minuten, für Fortgeschrittene
2022-01-28
Warum Bayes anstelle von Frequentismus?
2022-01-27
Visualizing error distribution in regression analysis
2022-01-27
Bayes in fünf Minuten
2022-01-27
Visualizing a log-y regression model
2022-01-14
2021
Simulation on controlling confounders
2021-12-01
Installation von R und seiner Freunde
2021-11-30
Analyse einiger RKI-Coronadaten: Eine reproduzierbare Fallstudie
2021-11-27
Jedes dritte Corona-Tote ist geimpft, also bringt Impfen nix? Falsch.
2021-11-15
Simulation sample and interval sizes for proportions
2021-09-16
MAD SD und 1.483
2021-08-11
Vergleich verschiedener Signifikanztstests bei einem Datensatz
2021-07-29
Links in Markdown-Tabellen
2021-07-14
Metadaten von Forschungsartikeln herunterladen
2021-07-08
Zeitungsartikel per API herunterladen
2021-07-07
Vorhersage-Modellierung des Diamantenpreises
2021-07-06
Diagrams with mermaid
2021-07-01
Talk on the the quantitative method in the sciences
2021-06-25
Talent and Looks -- Collider bias
2021-06-24
Overlaying facetted histograms with normal curve using ggplot2
2021-06-23
Rücktransformation logarithmierter y-Werte
2021-06-18
Ein Beispiel zum Nutzen einer Log-Transformation
2021-06-17
Beispiel zur Interpretation des Interaktionseffekts
2021-06-17
Kurzprofil: Datenvisualisierung Praxiskurs
2021-06-16
Vektorisierter Mittelwert in R
2021-06-15
ARM, Kap. 4 Syntax im Tidyverse-Stil
2021-06-15
Normalverteilung der Residuen, nicht Normalverteilung von Y
2021-06-05
ARM, Kap. 3 Syntax im Tidyverse-Stil
2021-06-05
Logarithmen und Exponenten in Regressionen: Wer braucht sowas?
2021-05-31
Analyse der Impfbereitschaft von Studentis
2021-05-30
YACSDA Seitensprünge
2021-05-28
Zeilenweise Operationen (tidyverse-Stil)
2021-05-27
Datensatz flights: Finde den Tag mit den meisten Abflügen
2021-05-27
Beispiel für pivot_longer()
2021-05-27
Modellierung Diamantenpreis 2
2021-05-25
Vorhersage-Modellierung des Preises von Diamanten
2021-05-19
Deutschlandkarten zeichnen mit R, für Anfänger
2021-04-19
Modeling your research data: A crash course using R
2021-03-24
Fallstudie: Modellierung von Flugverspätungen
2021-03-10
EDA zu Flugverspätungen
2021-03-08
Estimating population effect size, some thoughts
2021-03-04
How to standardize variables in R
2021-02-26
Modelling movie successes: linear regression
2021-02-24
Exercises to data wrangling with the tidyverse
2021-02-24
Exercises (no solutions): data vizualization on flight delays using tidyverse tools
2021-02-24
Case study: data vizualization on flight delays using tidyverse tools
2021-02-24
Data Science Memes
2021-02-23
Scraping Cochrane Reviews, some trials
2021-02-19
YACSDA: Topgear
2021-02-11
Explorative Datenanalyse zum Datensatz "OECD Wellbeing"
2021-02-11
Plotting multiple plots using purrr::map and ggplot
2021-02-06
Grading a prediction contest
2021-01-20
2020
Vorhersagen mit lm
2020-12-15
titanic-tidymodels: tree
2020-12-14
titanic-tidymodels: rf2
2020-12-14
titanic-tidymodels: rf1
2020-12-14
titanic-tidymodels: glm1
2020-12-14
titanic-tidymodels: boost simple
2020-12-14
titanic-tidymodels: boost
2020-12-14
Trying tidymodels: step_num2factor
2020-12-12
Kaggle Notebook on the Titanic competition using tidymodels
2020-12-12
Modellannahmen grafisch überprüfen
2020-12-10
Beispiel für eine Vorwärts-schrittweise-Regression
2020-12-10
Example for Meng's 2018 article on big data bias
2020-12-09
Plotting a regression surface (3D)
2020-12-08
Ex: Visualizing diamonds
2020-12-07
Simple Knime workflow for the Titanic Kaggle competition using a random forest model
2020-12-05
Execution time for largish data
2020-12-05
Comparison of R and Knime: Largish data set 1 (taxi rides 2020-06)
2020-12-05
ModernDive, Chapter 05 - Exercises/Aufgaben (in Deutsch)
2020-12-02
derivation-of-the-logistic-regression
2020-11-28
Comparing Knime and R: Simple Random Forest
2020-11-28
Comparing Knime and R: ETL_Basics
2020-11-28
The mean minimizes the sum of squares
2020-11-18
Simple derivation of linear regression coefficients
2020-11-18
Fallstudie zur Regressionsanalyse -- ggplot2movies
2020-11-13
Fallstudie zur Datenvisualisierung -- Datensatz "flights"
2020-11-12
On a popular confidence interval myth
2020-11-04
Prove of a local optimum of k-means (exercise in Witten et al., 2013)
2020-11-02
How to import data without whats-the-path-pain
2020-10-19
A simple solution to ditch the question "what's the path of my data?" when importing data to R
2020-10-19
Visualizing decision trees
2020-10-17
Help me help you: Wie man ein R-Problem so formuliert, dass einem geholfen werden kann
2020-09-23
Mean of the upper half of a Gaussian
2020-07-22
Randomization in presence of an interaction effect
2020-07-07
First grade math exercise
2020-07-03
Simulationsbasierte Inferenz – Kurzfassung
2020-06-26
How to sort the labels of the legend in a ggplot-diagram
2020-06-26
Introduction to Statistics: A modeling-based approach -- Course Syllabus
2020-06-19
Simulating data for a Gamma regression
2020-06-17
Spell out your model explicitly
2020-06-10
Absolute vs. relative Covid cases in modelling
2020-06-10
Distribution of residuals is of interest for linear models, not the distribution of y
2020-06-09
Simulation based inference for non-parametric tests, and a trick
2020-06-05
Simulating values according to some distribution
2020-06-05
On a confidence interval myth
2020-06-05
When adding variable hurts – The collider bias
2020-06-04
Chi-squared test using simulation based inference
2020-06-04
Plot for mean comparison
2020-06-02
Various methods for plotting 3d bivariate Gaussians
2020-05-30
Plotting a correlated bivariate Gaussian
2020-05-30
Plotting equivalence class for confounder triangle
2020-05-19
Adjustment set exercise from Elwert 2013
2020-05-19
Statistical power: Why small effects need big samples – An intuition
2020-05-15
How to find the package of a R function
2020-05-15
Crashkurs 'Umfrageforschung'
2020-05-14
Simulating Berkson's paradox
2020-04-16
Folien für den Workshop zur simulationsbasierten Inferenz, 2020-02-05
2020-02-02
Cluster analysis and image size reduction
2020-01-10
2019
Pictogram waffle plot using emojifont
2019-11-25
Plotting functions in 3d
2019-11-19
Correlation cannot be more extreme than +1/-1, proof using Cauchy-Schwarz inequality
2019-11-19
Some intution on the Gaussian distribution formula
2019-11-18
Some notes on data transformations for regression
2019-11-11
Most important asssumption in linear models ... and the second most
2019-11-11
Some ways for plotting 3D linear models
2019-10-21
P-values are uniformly distributed under the H0, a simulation
2019-10-11
Some algebraic properties of z-scores
2019-10-07
Simple proof that the correlation coefficient cannot exceed abs(1)
2019-10-07
Looping over function arguments using purrr
2019-09-28
Slides for my workshop on Markdown and Git
2019-09-09
Computing rater accuracy across multiple raters and multiple criteria
2019-08-27
Performance measures for `caret` and `lm()`
2019-08-02
Geoplotting - update to my MODAR-book
2019-07-29
Slides (in German) for my talk on "Datenkompetenz für alle" at the R-User-Group Nürnberg July 2019
2019-07-17
Testing multiple vectors for equality
2019-07-03
Testing for equality rowwise
2019-07-03
Generalized rowwise operations using purrr::pmap
2019-07-03
Collapse rows to eliminate NAs
2019-07-03
How to document a conference talk in citation manager software
2019-06-28
Talk 'Data Science in Business'
2019-05-10
How to convert raw scores to different types of standardized scores
2019-04-11
A stochastic problem by Warren Buffet solved with simulation
2019-04-04
Reducing residual variance in modeling
2019-03-26
Beispiel für eine logistische Regression
2019-03-20
Slides of my talk at ECDA 2019: Modeling of AfD election success
2019-03-16
How to mutate all columns of a data frame
2019-03-13
Emails schreiben an Dozierende
2019-02-28
Ornaments with ggformula
2019-02-12
Online reaction time experiments using lab.js
2019-01-29
Reading text files and Umlaute hassle
2019-01-25
Poster: A Bayes model of AfD party success
2019-01-24
Poster: Populism in German politicians
2019-01-17
An illustration of tidyverse’ gather/spread
2019-01-15
A clean sessionInfo page
2019-01-14
Barplots with mosaic
2019-01-10
A short tutorial for the logistic regression
2019-01-07
Folien für Vortrag 'Papers publizieren'
2019-01-04
Why standard regression is not (so) adequate for regressing proportions
2019-01-03
2018
Force bibtex to show the exact date
2018-12-29
Using BibLaTeX instead of Bibtex in Rmarkdown for finer control
2018-12-28
Generating mass reports using Rmarkdown in R
2018-12-19
Visualizing a regression plane (two predictors)
2018-12-13
Visualizing a multivariate normal distribution
2018-12-13
Changing the default color scheme in ggplot2
2018-12-12
New split-apply-combine variant in dplyr: group_split()
2018-12-10
Applying a function to each row of a data frame
2018-12-07
This blog has a DOI
2018-12-06
Coercing an index over a character vector
2018-12-06
Plot many ggplot diagrams using nest() and map()
2018-12-05
What are the names of the cars with 4 cylinders?
2018-12-03
Image paths in Hugo/blogdown
2018-11-28
Compute all pairwise differences in matrix
2018-11-21
Slides for the „hands-on data exploration workshop"
2018-11-12
Simple Examples with DiagrammeR
2018-11-07
Plot columns repeatedly
2018-11-02
OECD Wellbeing dataset (2016)
2018-10-16
OECD Wellbeing - Explorative Analyse
2018-10-16
Change standard theme of ggplot
2018-10-10
Talk - Populism in tweets of German politicians (talk at DGPs 2018)
2018-09-14
DataExploR: Typische Businessfragen mit R analysieren
2018-09-12
Wenn Excel aufgibt: Datenvisualisierung kann zu komplex für Excel werden
2018-09-11
Reproducible academic writing with RMarkdown - Talk at DGPs 2018
2018-09-03
Plotting a logistic regression - some considerations
2018-09-03
Talk - Predictors of AfD party success in the 2017 elections. A Bayesian modeling approach
2018-09-02
Bayesian modeling of populist party success in German federal elections - A notebook from the lab
2018-08-25
Finding NAs in multiples columns (per row)
2018-08-09
Binning and recoding with R - some recommendations
2018-08-09
Power calculation for the general linear model
2018-07-24
Work with bibtex bib files like a pro
2018-07-05
How to prepare data for a gantt diagram
2018-07-05
How to cite "in press" using Bibtex
2018-07-01
Bibtex entry type for conference talks suitable for APA
2018-06-26
Easy way to convert factors zu numbers
2018-06-22
Some musings on the logistic map
2018-06-19
Visualizing mean values between two groups - the tidyverse way
2018-06-10
Playing around with geo mapping: combining demographic data with spatial data
2018-05-28
Playing around with dumbbell plots
2018-05-23
Why is the sample mean a good point estimator of the population mean? A simulation and some thoughts.
2018-05-18
Showcase of Viridis, maps, and ggcounty
2018-05-18
Playing around with dataviz: Showing correlations
2018-05-18
Playing around with dataviz: Comparing distributions between groups
2018-05-18
Parse libraries from R project
2018-04-11
One-way ANOVA power analysis
2018-04-11
Convenient way to cite blog posts using Bibtex
2018-04-11
Visualisation of interaction for the logistic regression
2018-04-02
Why "n-1" in empirical variance? A simulation.
2018-03-24
Tangible data of normal distributed data
2018-03-16
Beispiel zu Simpsons Paradox
2018-03-16
Map students to presentation slots
2018-03-11
Intuition to Simpson's paradox
2018-03-09
How to create columns in a dataframe in R
2018-03-07
Papers publizieren. Versuch einer Anleitung
2018-01-25
Simulate p-hacking - adding observations
2018-01-24
Visualizing a logistic regression the easy way
2018-01-23
2017
Zusammenhang von Lernen und Noten im Statistikunterricht
2017-12-20
A p-value picture
2017-11-29
Image path for blogdown
2017-11-28
Grundlagen des Textminings mit R - Teil 2
2017-11-28
Grundlagen des Textminings mit R
2017-11-28
My favorite stats text book
2017-11-27
Interactive diagrams in lieu of shiny?
2017-11-27
Dummy variables and regression
2017-11-27
Hello World, this is Blogdown
2017-11-21
Compute effect sizes with R. A primer.
2017-11-21
Great dataviz examples in rstats
2017-11-20
Wie gut schätzt eine Stichprobe die Grundgesamtheit?
2017-11-17
Some thoughts on tidyveal and environments in R
2017-11-16
Yart - Yet Another Markdown Report Template
2017-11-15
Package 'pradadata' on Github - feature social science data
2017-11-07
Populism in tweets of German politicians
2017-11-01
Data, machine-friendly, of the 2017 German federal elections
2017-10-30
Mapping foreigner ratio to AfD election results in the German Wahlkreise
2017-10-22
Simple way to separate train and test sample in R
2017-10-17
Two R plot side by side in .Rmd-Files
2017-10-12
Mapping unemployment ratio to AfD election results in German Wahlkreise
2017-10-10
Mapping unemployment rate to German district areas
2017-10-09
Drawing a country map
2017-10-06
Kongresse 2018 - Wirtschaftspsychologie und verwandte Gebiete
2017-09-27
Some intriguing psychology papers (open access)
2017-09-26
Crashkurs Datenanalyse mit R
2017-09-12
Different ways to present summaries in ggplot2
2017-09-08
Different ways to count NAs over multiple columns
2017-09-08
Replacing dplyr::do by purrr:map. Some considerations
2017-09-05
Comparing the pipe with base methods
2017-08-31
Shading normal curve made easy
2017-08-29
Programming with dplyr: Part 03, working with strings
2017-08-09
Precipitation - It never rains in Southern Nuremberg (?). Working with dates/times.
2017-08-01
Programming with dplyr: Part 02, writing a function
2017-07-06
Effect sizes for the Mann-Whitney U Test: an intuition
2017-07-04
Programming with dplyr: Part 01, introduction
2017-06-28
A second look to grouping with dplyr
2017-06-28
Preparation of extraversion survey data
2017-06-24
Review of "The 7 Deadly Sins of Psychology" by Chris Chambers
2017-06-22
Print csv-file tables as plots
2017-06-22
Identifying the package of a function
2017-06-12
Sorting the x-axis in bargraphs using ggplot2
2017-06-05
mean and sd of z-values
2017-05-26
Simple way of plotting normal/logistic/etc. curve
2017-05-24
Squares maximize area - a visualization
2017-05-19
A predictor's unique contribution - (visual) demonstration
2017-05-17
Crashkurs Datenanalyse mit R
2017-05-16
Introductory books for data analysis
2017-05-15
Plotting true random numbers
2017-05-12
Variance explained vs. variance blurred
2017-05-05
This blog now has a DOI
2017-05-04
Einführung in die Datenanalyse mit R-Paket 'dplyr' - R User Group Nürnberg
2017-04-27
Tools for Academic Writing - Comparison
2017-04-26
Covariance as correlation
2017-04-25
Plotting skewed distributions
2017-04-19
Error bars for interaction effects with nominal variables
2017-04-18
The effect of sample on p-values. A simulation.
2017-04-13
Three ways to dichotomize a variable
2017-04-11
Rowwise operations in dplyr
2017-03-27
Convert list to dataframe
2017-03-08
How to avoid Github/merge conflicts with Rmd-files
2017-03-06
Lieblings-R-Befehle
2017-03-05
AfD Mining - basales Textmining zum AfD-Parteiprogramm
2017-02-21
Checklist for Data Cleansing
2017-02-13
Sentiment-Wörterbuch erstellen
2017-02-04
Dataset 'performance in stats test'
2017-01-27
Convert logit to probability
2017-01-24
The two ggplot2-ways of plottings bars
2017-01-20
Gentle intro to 'R-squared equals squared r'
2017-01-20
Fallstudie (YACSDA) zur praktischen Datenanalyse mit dplyr
2017-01-18
Visualizing Interaction Effects with ggplot2
2017-01-17
Kongresse 2017 - Wirtschaftspsychologie und verwandte Gebiete
2017-01-17
I am unavailable for review
2017-01-17
How to import a strange CSV
2017-01-12
R startet nicht
2017-01-11
Convert data frame from 'wide' to 'long'
2017-01-06
YACSDA (Fallstudie) zum Datensatz 'Affairs'
2017-01-05
Why is the variance additive? An intuition.
2017-01-04
2016
A Plain Markdown Post
2016-12-30
Überleben auf der Titanic - YACSDA für nominale Daten
2016-12-22
Some tricks on dplyr::filter
2016-12-21
Müncher Mietpreis: Übung zum p-Wert
2016-12-21
Some thoughts on 'Dear stats curriculum developers'
2016-12-08
Simulation of p-values
2016-12-01
Pipe the Variance
2016-11-30
Some musings on the validation of Satow's Extraversion questionnaire
2016-11-23
Preparing survey results data
2016-11-19
Some thoughts (and simulation) on overfitting
2016-11-13
New bar stacking with ggplot 2.2.0
2016-11-13
Crashkurs zur Erstellung von Barplots für Umfrage-Daten
2016-11-13
Plotting survey results using `ggplot2`
2016-11-12
Horoskopstudie zum Barnumeffekt
2016-11-09
Some reflections on stochastic independence
2016-11-08
Bind lists to data frame for aggregating linear models results
2016-11-04
How to plot a 'percentage plot' with ggplot2
2016-11-03
Different ways to set figure size in RMarkdown
2016-11-02
CLES plot
2016-10-17
Checking for NA with dplyr
2016-10-16
Multiple ways to subsetting data frames in R
2016-10-15
How to read Github files into R easily
2016-10-12
Simple (R-)Markdown template for 'Onepager-reports' etc.
2016-10-05
Using purrr to build a data frame of vectors (eg., from effect size statistics)
2016-09-29
Summary for multiple variables using purrr
2016-09-28
EDIT: Running multiple simple regressions with purrr
2016-09-26
Running multiple simple regressions with purrr
2016-09-23
How to promote open science? Some practical recommendations
2016-09-22
Code example for plotting boxplots instead of mean bars
2016-09-22
Fallstudie zur explorative Datenanalyse (YACSDA) beim Datensatz 'TopGear'
2016-09-14
Why Likert scales are (in general) not metric
2016-09-07
Why is SD(X) unequal to MAD(X)?
2016-08-31
Simple way to plot a normal distribution with ggplot2
2016-08-30
Shading multiple areas under normal curve
2016-08-30
Plot of mean with exact numbers using ggplot2
2016-08-30
Why absolute correlation value (r) cannot exceed 1. An intuition.
2016-08-28
The effect of a status symbol on success in online dating: an experimental study (data paper)
2016-08-27
Multiple t-Tests with dplyr
2016-08-18
Introduction to the measurement theory, and conjoint measurement theory
2016-08-17
Looping through dataframe columns using purrr::map()
2016-08-16
Intuition on correlation
2016-07-25
Practical data cleansing in R
2016-07-24
Yet another case study on data analysis (YACSDA) – extramarital affairs data set
2016-07-23
Why metric scale level cannot be taken for granted
2016-07-21
What to read in summer (German)
2016-07-20
Case study on data wrangling with dplyr (German)
2016-07-18
Intuition on Cohen's d
2016-07-15
How to add a logo to a slidify presentation
2016-07-05
Long vs. wide format, and gather()
2016-07-04
Cross-tabulate multiple variables
2016-07-03
Why have z-transformed values a mean of zero and a sd of 1?
2016-07-02
0001
0001-01-01