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Posts by Professor Red Owl

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#rwmentoringmoments Teamwork Tuesday! We are better together! Teams bring different perspectives to the table to enhance solutions. Teamwork makes the dream WORK! #edubs

robwottawa.com/podcast

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"This is an important thing to think about."

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Two radar charts side by side. On the left, the nine values are in descending order, forming a type of snail shell figure. On the right, the nine values are in random order, forming an explosion-like shape.

These charts have the same values – just in a different order


Two radar charts side by side, illustrating how the ordering of axes in a radar chart dramatically changes the perceived shape — even when the underlying data is identical. Both charts show scores for Jane Doe (blue) and John Doe (pink) across nine dimensions labelled A through I, with values ranging from 0 to 100.
Jane Doe's chart shows a compact, roughly rounded shape sitting mostly in the upper half of the radar, suggesting her high scores are clustered around adjacent axes in this arrangement.
John Doe's chart shows a jagged, star-like shape with sharp spikes extending outward in several directions and deep indentations between them, creating a visually fragmented appearance.
The key insight of this chart is that both shapes represent exactly the same set of values — only the order of the axes differs. This demonstrates a well-known limitation of radar charts: the visual shape is highly sensitive to axis arrangement, which means two identical datasets can look completely different depending on how the axes are ordered. Readers should focus on individual axis values rather than overall shape when interpreting radar charts.
Left: Jane Doe
Right: John Doe
Created with the Radar chart template

Two radar charts side by side. On the left, the nine values are in descending order, forming a type of snail shell figure. On the right, the nine values are in random order, forming an explosion-like shape. These charts have the same values – just in a different order Two radar charts side by side, illustrating how the ordering of axes in a radar chart dramatically changes the perceived shape — even when the underlying data is identical. Both charts show scores for Jane Doe (blue) and John Doe (pink) across nine dimensions labelled A through I, with values ranging from 0 to 100. Jane Doe's chart shows a compact, roughly rounded shape sitting mostly in the upper half of the radar, suggesting her high scores are clustered around adjacent axes in this arrangement. John Doe's chart shows a jagged, star-like shape with sharp spikes extending outward in several directions and deep indentations between them, creating a visually fragmented appearance. The key insight of this chart is that both shapes represent exactly the same set of values — only the order of the axes differs. This demonstrates a well-known limitation of radar charts: the visual shape is highly sensitive to axis arrangement, which means two identical datasets can look completely different depending on how the axes are ordered. Readers should focus on individual axis values rather than overall shape when interpreting radar charts. Left: Jane Doe Right: John Doe Created with the Radar chart template

Nice reminder and visual representation of the limitations of radar charts, by Flourish 📊

Source: flourish.studio/blog/create-...

1 day ago 50 8 0 2

If not for Trump, what's the emoluments clause for? What's impeachment for? What's the 25th Amendment for? What's section 3 of the 14th Amendment for? What are checks and balances for?

The baddies are cherrypicking the Constitution the same way they do the bible: for their own benefit.

1 day ago 7514 2267 261 83

Today’s order concluding Illinois v. Trump confirms what's been clear to the people of our state from the beginning:

Donald Trump’s deployment of the National Guard to occupy our streets was a reckless and illegal abuse of power.

2 days ago 2208 550 26 15
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The scammers profiting off Trump's immigration crackdown Fake judges. Fake lawyers. Real deportations.

In one New York case, scammers organized fake court hearings via video conference. Screenshots from those calls show two suspects dressed as an attorney and another as a Border Patrol agent.

In all, prosecutors say, they stole more than $100,000 from at least 150 victims.

3 days ago 196 99 3 4
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Justice According To Trump The Justice Department has moved to drop the last remaining January 6 insurrection criminal matters: the Oath Keepers and Proud Boys seditious conspiracy cases.

DOJ seeks to vacate insurrectionists’ convictions, while going after a former CIA Director: If Trump can make convictions disappear for allies while prosecuting critics, the damage isn’t just theoretical. Once that line is crossed, it doesn’t easily uncross itself. open.substack.com/pub/joycevan...

3 days ago 2207 880 47 21
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I have not seen this reported elsewhere, but by previous spiteful action by #Felon47 it would come as no surprise.
Can anyone be more nasty than Trump.

3 days ago 281 95 43 6
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The United States is destroying itself | Rebecca Solnit The daily news can’t adequately convey the administration’s sabotaging of our government, economy, alliances and environment

“The United States is being murdered, and it’s an inside job. Every department, every branch, every bureau and function of the federal government is being fatally corrupted or altogether dismantled or disabled.”

3 days ago 13796 5880 917 498
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Pancreatic cancer mRNA vaccine shows lasting results in an early trial Scientists caution that more research is needed, but nearly all of the patients who responded to the personalized vaccine are still alive six years later.

My father survived a year with pancreatic cancer but it was a year of terrible suffering. This is very encouraging news.

www.nbcnews.com/health/cance...

3 days ago 5771 1110 167 76
USAspending.gov

This is a huge deal in the world of higher ed data. RTI lost the IPEDS contract (effective in just two weeks!) to a much smaller firm. It's worth watching, to say the least.

www.usaspending.gov/award/CONT_A...

4 days ago 24 7 4 3
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#rwmentoringmoments Formative Friday! Collect formative “data” to INform our approach to teaching and leading! Build on the relationships, walk slowly through the halls, and have conversations!! robwottawa.com/podcast

5 days ago 1 1 0 0
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#rwmentoringmoments Widespread Wednesday! Go impact our people over time and spread positivity around! Go be someone’s Mentoring Moment!!! robwottawa.com/podcast

1 week ago 1 1 0 0
All graphs are comparisons, and the relevance of this principle to practical advice for producing better graphs | Statistical Modeling, Causal Inference, and Social Science

All graphs are comparisons, and the relevance of this principle to practical advice for producing better graphs
statmodeling.stat.columbia.edu/2026/04/12/a...

1 week ago 13 5 1 0
Huygens' chart of mortality, plotting proportion alive on the Y axis vs. age. Vertical lines at age 20 and 36 show how to read off the proportion at that age.

Huygens' chart of mortality, plotting proportion alive on the Y axis vs. age. Vertical lines at age 20 and 36 show how to read off the proportion at that age.

Portrait of Christiaan Huygens

Portrait of Christiaan Huygens

#TodayinHistory #dataviz #OTD 📊
🎂Apr 14, 1629 Christiaan Huygens born in The Hague, Netherlands 🇳🇱

In 1669, he created the first graph of a continuous distribution function, a graph of Gaunt's life table, and a demonstration of how to find the median remaining lifetime for a person of given age

1 week ago 7 1 0 0
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Liberal candidates sweep school board elections as Moms for Liberty loses ground By Carrie Sampson, Assistant Professor in the Division of Educational Leadership and Innovation, Arizona State University,The Conversation, Michigan AdvanceElection races for local school boards have ...

Liberal candidates sweep school board elections as Moms for Liberty loses ground

www.rawstory.com/district-sch...

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Never trust anyone who would rather raise the retirement age than make the rich pay their fair share into Social Security!

1 week ago 169 47 1 1
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For all those still feeling the moon joy—Artemis II was brought to you by public schools and publicly funded science. Copy that! 👩‍🚀🚀💕

*All four astronauts went to public schools!

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No other president I can remember ever needed to announce a mass pardon for his cabinet & staff.

Because they didn't need it.

1 week ago 7867 1643 256 71
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Professor Banned From Teaching Plato Excerpt to Leave Texas A&M: ‘It’s Getting Worse’ Martin Peterson tells us why he’s not staying to fight.

“It would have been nice if at least someone had been willing to stand up for academic freedom and publicly say that we find the policy problematic. But no single person, department head, dean, or provost, has done so.” https://chroni.cl/4cliCou

1 week ago 42 21 1 1
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#rwmentoringmoments Mission Monday!!! Plan ahead for a lesson or meeting. If we do not plan prepare, then we’ll definitely plan to REPAIR! robwottawa.com/podcast

1 week ago 1 1 0 0

America, you really don't need the Epstein files. You already know the truth. 😕

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The American president counts Vladimir Putin and Kim Jong-Un as his friends while denouncing the Pope.

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Congratulations to the people of Hungary!!

And thank you for showing the fascists how it’s done.

1 week ago 2874 326 52 11
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If this is true that Donald should be indicted for murder.

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From EARTHSEED: THE BOOKS OF THE LIVING

Choose your leaders

with wisdom and forethought.

To be led by a coward

is to be controlled

by all that the coward fears.
To be led by a fool


is to be led

by the opportunists

who control the fool.

To be led by a thief

is to offer up

your most precious treasures

to be stolen.
To be led by a liar


is to ask

to be told lies.

To be led by a tyrant

is to sell yourself

and those you love

into slavery.

From EARTHSEED: THE BOOKS OF THE LIVING Choose your leaders with wisdom and forethought. To be led by a coward is to be controlled by all that the coward fears. To be led by a fool is to be led by the opportunists who control the fool. To be led by a thief is to offer up your most precious treasures to be stolen. To be led by a liar is to ask to be told lies. To be led by a tyrant is to sell yourself and those you love into slavery.

Octavia E. Butler, 1998:

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A federal judge is forcing the Trump administration to answer for Renee Good’s killing After months of secrecy, the Trump administration must turn over body-camera footage, witness interviews, and investigative files tied to the Minneapolis killing.

A federal judge in Minnesota has ordered the Departments of Justice and Homeland Security to turn over unredacted evidence including body cam footage in Good’s January 7 killing within three weeks, according to the Minnesota Star Tribune.

1 week ago 804 204 26 12
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The end of Viktor Orbán’s autocratic regime is a victory not just for Hungary, but for people who value democracy around the world. Congratulations to Tisza, to incoming leader Péter Magyar, and to Hungarians everywhere.

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Eldridge Colby joins Joseph Stalin in wondering aloud how many divisions the Pope can muster.

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