Using this “Rblog”
At the top you should find a search box and a menu. Probably the best way to find if I have something you want here is to use that search. However, you may also find things using the “CATEGORIES” menu on the right of this main page.
Going back to the top right of the menu bar “Welcome” gives you a bit more than this introduction, “About” gives you some geeky background and you can guess what “Copyright/permissions” gives you. I hope it’s all useful, do please contact me if you have suggestions, comments, corrections or requests. What follows below is the full list of posts in reverse chronological order of creation. Code used in the posts is in them and revealed by hitting the “Show code”, buttons. Inside code blocks there is a “copy to clipboard” button if you hover your cursor inside the block.An R SAFAQ
League tables
Illustrating the need to be wary of league tables
F-measure: 'positive specific agreement' index
Illustrates that the Cohen's kappa converges on the F-measure as d increases
Mapping dates to episodes
Illustrates how to use join_by() in tidyverse R to do this.
Autocorrelation (1)
Reminding myself about autocorrelation methods.
Dichotomisation (1)
Illustrates the impact of dichotomising a continuous variable on correlations with other variables.
Using simulation to check a function
Illustrates using simulation to check my function based on a 1969 paper.
Bug in facetted ggplot with coord.fixed()
I think this is a bug, others disagree!
Percentage of possible score range
This explains why this transform can be misleading.
Convergent validity issues (1)
This expands the glossary entry about convergent validity
Dispersion
Post that will link closely to glossary entries and shiny apps all about dispersion, scatter, variance
Anonymising ODT and DOCX documents
Anonymising Libre/OpenOffice ODT and M$oft Wurd DOCX documents
CSC by gender and age
CSC matching lookup with lookupCSCgenderAndAge()
Hedges's g
A bit about Hedges's g!
Correlation coefficients (2)
Significance testing and confidence intervals for correlation coefficients ... and back to why!
Correlation coefficients (1)
Exploration of the differences between different correlation coefficients.
Bonferroni correction
A simple explanation of the Bonferroni correction for the multiple tests problem.
Confidence interval around Spearman correlation coefficient
Explores four methods of estimating a CI around an observed Spearman correlation.
Explore distributions with plots
Graphical exploration of fit between distributions and against theoretical distributions.
Tests of fit to Gaussian distribution
Introduction to four tests of fit to Gaussian distribution available in R
Kolmogorov-Smirnov test
First post about using R to test fit to univariate Gaussian (a.k.a. 'Normal') distribution: Kolmogorov-Test
Using tryCatch() (within simulations)
I had previously found the structure of tryCatch() difficult: cracked it!
Background on plotJacobson() function
1.xi.23 This is very early work in progress and will evolve a lot over the next week and then get into CECPfuns R package on github.
Confidence intervals for quantiles
A general coverage of quantiles, the ECDF (Empirical Cumulative Distribution Function) and confidence intervals (CIs) around quantiles
Mapping individual scores to referential data using quantiles
Exploring the use of quantiles and their confidence intervals, and ECDFs to map individuals' scores to referential data.
