#rstats developer of graphical methods for categorical and multivariate data; #datavis history of data visualization; #historicaldatavis; Milestones project
Toronto, Ontario
Joined August 2015
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ANNOUNCE: #psy6135
I'm teaching my course _Psychology of Data Visualization_ again starting in Jan. Among other topics: #history of #dataviz, graph #perception, #rstats graphs, data journalism, ...
Course materials (not yet revised) available at: friendly.github.io/6135/
ALT Hex sticker for #psy6135, depicting a brain with many types of graphs reached by arrows from a central lightbulb
Michael Friendly @datavisfriendly.bsky.social retweeted
Celebrating a national bestseller! YorkU Professor Louis Busch’s debut book, Carry Your Heart, explores Indigenous helping wisdom and psychological flexibility. Busch is donating author royalties to two Indigenous organizations.
Read more: yorku.ca/health/2026/10/28/y…
#YorkU
Another great example from @OurWorldInData of translating a complex research topic with meta-analysis results into a set of charts that tell the story to your eyes.
When do people experience mental health conditions for the first time?
— The key chart from Hannah Ritchie's new @OurWorldInData article: ourworldindata.org/when-do-p…
Michael Friendly @datavisfriendly.bsky.social retweeted
The dual Y axis chart lets you compare 2 series on the same plot.
It's one of the easiest ways to _lie_ with data.
So I made a little playground to highlight why it's problematic!
react-graph-gallery.com/exam…
Michael Friendly @datavisfriendly.bsky.social retweeted
Great demo on aging and brain health with our MRI Director, Dale Stevens (episode 4, 12:42)
@YorkU_CIAN
tvo.org/video/documentaries/…
Michael Friendly @datavisfriendly.bsky.social retweeted
We have new artificial intelligence guidelines on Stylebook Online, informed by the AP's own policies on what we do and don't do with AI.
One tip: Any output from an AI tool should be treated as unvetted source material. You must apply your editorial judgment and sourcing standards when considering and editing any information for publication.
For the full list of considerations, subscribe to AP Stylebook Online. store.stylebooks.com/apstyle…
Michael Friendly @datavisfriendly.bsky.social retweeted
Check out our new Virtual Tour and explore our three York U campuses from wherever you are. Take the self-guided virtual tour to navigate 360-degree panoramas and learn more about York’s academic spaces, residences, and student life: bit.ly/4BiZsLl. 📍 | #DiscoverYU
Michael Friendly @datavisfriendly.bsky.social retweeted
I prefer an educated woman to run the City of Toronto.
Michael Friendly @datavisfriendly.bsky.social retweeted
The Wikipedia community has built a tool that makes it possible to embed our interactive Our World in Data charts right in any Wikipedia page.
I have always admired Wikipedia and all the people contributing to it. And I'm very happy that our work now can get used this way!
Michael Friendly @datavisfriendly.bsky.social retweeted
En la práctica, la realidad empírica destruye los supuestos de la regresión lineal tradicional (OLS): los datos se agrupan, las varianzas explotan, las relaciones se curvan y los ceros inundan las tablas.
Forzar tus datos en OLS arruina tu inferencia y predicción. 📊👇
#Analytics
Maybe Data Science Fiction. None of the links to examples work
Edward Tufte-style presentations in CSS github.com/edwardtufte/tufte… and LaTeX: tufte-latex.github.io/tufte-…
Michael Friendly @datavisfriendly.bsky.social retweeted
My Claude found a critical zero day vulnerability in the Code of Hammurabi, unnoticed by developers for 3,779 years.
Michael Friendly @datavisfriendly.bsky.social retweeted
I’ve delivered on building housing, and we’re just getting started.
Thanks to partnership with Prime Minister Carney we have secured $2.7 billion to build housing you can afford.
Michael Friendly @datavisfriendly.bsky.social retweeted
Tommy Douglas knew then what New Democrats still know today.
If we could mobilize the resources of this country to defeat Nazi tyranny, there is no reason we cannot do the same to make sure that each and every person has what they need to live a dignified life.
Happy Birthday, Tommy.
