By way of David Kennerr, something in this CNN frame seems off.

Adding on to their series of graphics to explain statistical concepts, Victor Powell and Lewis Lehe use a set of interactives to describe Markov Chains. Even if you already know what Markov Chains are or use them regularly, you can use the full-screen version to enter your own set of transition probabilities. Then let the simulation run.

Nice. Should be especially useful for educators.

Visualization on the Web can be tricky for those unfamiliar with code. The new JavaScript library p5.js, developed by Lauren McCarthy and collaborators, aims to make your first steps easier and less painful.

Using the original metaphor of a software sketchbook, p5.js has a full set of drawing functionality. However, you’re not limited to your drawing canvas, you can think of your whole browser page as your sketch! For this, p5.js has addon libraries that make it easy to interact with other HTML5 objects, including text, input, video, webcam, and sound.

The library follows some of the same philosophy as Processing — that is, straightforward to get up and running — and reimagines the implementation and approach for recent web technology. Even if you’re not into programming, it’s worth visiting if just to watch, listen, and interact with Dan Shiffman as he enthusiastically talks about the library.

Digital Ethereal is a project that explores wireless, making what’s typically invisible visible and tangible. In the piece above, a handheld sensor is used to detect the strength of Wi-Fi signal from a personal hotspot. A person waves the sensor around the area, and long-exposure photography captures the patterns.

Reminds me of the Immaterials project from a while back, which used a light stick to represent signal strength rather than a signal light.

A group of researchers from MIT, Microsoft Research, and Adobe Research are experimenting with seemingly inanimate objects as a proxy for sound in the vicinity. They call it the Visual Microphone.

When sound hits an object, it causes small vibrations of the object’s surface. We show how, using only high-speed video of the object, we can extract those minute vibrations and partially recover the sound that produced them, allowing us to turn everyday objects—a glass of water, a potted plant, a box of tissues, or a bag of chips—into visual microphones.

See the demo in the video above. It’s impressive. It’s also great that there’s another use for high speed video other than watching water balloons pop and guns fire on the Discovery Channel.

Find more details on the project here.

In celebration of John Venn’s 180th birthday, today’s Google Doodle produces a Venn diagram with the two O’s in Google’s name. Click the play button for a little bit of entertainment.

For more Venn fun, see also Muppet name etymology, the Venn pie-agram, and what makes a platypus playing a keytar.

A group of researchers used where “notable individuals” were born and place of death, based on data from Freebase, as a lens into culture history. The video explainer below shows some results:

From Nature:

The team used those data to create a movie that starts in 600 bc and ends in 2012. Each person’s birth place appears on a map of the world as a blue dot and their death as a red dot. The result is a way to visualize cultural history — as a city becomes more important, more notable people die there.

Before you jump to too many conclusions, keep in mind where the data comes from. Freebase is kind of like Wikipedia for data, so you get cultural bias towards the United States and Europe. There are fewer data points just about everywhere else.

Therefore, avoid the inclination to think that such and such city or country looks unimportant, focus on the data that’s there and compare to what else is in the vicinity. From this angle, this is interesting stuff. [Science via Nature | Thanks, Mauro]

I don’t know about you, but I like my bagel as two roughly cut, congruent linked halves. I usually use a fork, aluminum foil, and some duct tape. No more. George Hart demonstrates a better way to do it. It’s a good thing too, because I was running low on duct tape.

Statistics has an image problem. To the general public, it’s old, out of touch, and boring. It’s a problem because we place stock in a younger generation who we (1) want to be more data literate and (2) eventually lead the way, or at least participate, in all data-related realms. It’s beneficial for everyone.

This is Statistics is a new push by the American Statistical Association to provide a new perspective that doesn’t dwell on sheets of equations.
Read More

Vax, a game by Ellsworth Campbell and Isaac Bromley, explores how a disease spreads through a network, starting with just one infected person. It’s a simple concept that works well.

When you start the game, you have a network of uninfected people. The more connected a person is, the more chances that person can infect others upon his or her own infection. Your goal is to strategically administer a limited supply of vaccinations and to quarantine people to prevent as many infections as you can.

Fun and educational. Woo.

Lazaro Gamio and Richard Johnson for the Washington Post cover civilian deaths in the recent Gaza conflict, namely child civilians. Red icons represent children.

Similar to a previous piece on the death penalty in the United States, the icons provide more focus on individuals while maintaining a zoomed out view of the situation. However, this piece brings an interactive component that shows deaths over time and more information in tooltips on the mouseover.

All Things Considered on NPR ran a fine series on how we interpret probability and uncertainty. It came in five bits (plus one follow-up), each five to ten minutes long. They explore explanations of risk in different areas such as national security, health, and the daily weather and how people interpret the numbers and words.

A recurring theme was experts who use alternative descriptions for the seemingly concrete numbers.

Doctors, including Leigh Simmons, typically prefer words. Simmons is an internist and part of a group practice that provides primary care at Mass General. “As doctors we tend to often use words like, ‘very small risk,’ ‘very unlikely,’ ‘very rare,’ ‘very likely,’ ‘high risk,’ ” she says.

Not that words always makes understanding numeric probability easier. From the social scientist for the National Weather Service:

And it’s not just a numbers game — words used to describe weather can be just as confusing. Take “watch” and “warning,” for example.

“‘Watch’ means that conditions are ripe for something to happen. ‘Warning’ means that it is happening — it is imminent,” Brown says. “It’s easy to get them confused.”

Both the doctor and the social scientist agree that a combination of numbers, words, and a visual explanation could be the best route.

Some people think we should forgo trying to explain uncertainty to a general public that doesn’t understand, but the rejectors themselves don’t recognize the importance. Just because you don’t understand something doesn’t mean you should ignore it.

Listen to the full series. [via Dart-Throwing Chimp]

Numbers is a short film by Robert Hloz where some people see numbers appear above others’ heads. What the numbers are varies by the person with the ability, and it turns out knowing can be a blessing and a curse. Worth your nine and a half minutes of undivided attention:

Yelp released an amusing tool that lets you see how the use of word in reviews has changed over the site’s decade of existence.

From food trends to popular slang to short-lived beauty fads (Brazilian blowout anyone?), Yelp Trends searches through words used in Yelp reviews to show you what’s hot and reveals the trend-setting cities that kicked it all off. Our massive wealth of data and the high quality reviews contributed by the Yelp community are what allow us to surface consumer trends and behavior based on ten years of experiences shared by locals around the world.

Just type in keywords, select your city, business category, and click the search button to see the changes. For the less used words, the data looks mostly like noise, but there are also some clear trends like in craft beer and chicken and waffles.

John Walsh, the U.S. Senator from Montana, is in the news lately for plagiarizing a large portion of his final paper towards his master’s degree. The New York Times highlighted the portions that Walsh copied without attribution (red) and the portions he copied with improper attribution (yellow). About a third of the paper was just straight up lifted from others’ works, including the final recommendations and conclusion, which is basically the grand finale.

See also: Visualizing Plagiarism by Gregor Aisch, which shows the plagiarized PhD thesis of Germany’s former Minister of Defense.

One of the most annoying parts of downloading data from large portals is that you never quite know what you’re gonna get. It’s a box of chocolates. It’s government data sites. It’s lists of datasets with vague or unhelpful titles with links to download. Of course, I’d rather have a hodgepodge than nothing at all, but as with most things, there’s room for improvement.

The OECD, which maintains and provides data on the country level, takes steps towards a more helpful portal that makes data grabs less of a headache. With the help of Raureif, 9elements, and Moritz Stefaner, the new portal is still in beta, but there’s plenty to like.
Read More

If you’ve played around with R enough, there comes a time when you just need some data to mess around with. Maybe it’s to learn a new method or to make one of your own. R offers some small-ish, clean datasets to poke at, but sometimes you need bigger, messier data. Hadley Wickham from RStudio released four popular large-ish datasets in package form to help you with that.

I’ve released four new data packages to CRAN: babynames, fueleconomy, nasaweather and nycflights13. The goal of these packages is to provide some interesting, and relatively large, datasets to demonstrate various data analysis challenges in R. The package source code (on github, linked above) is fully reproducible so that you can see some data tidying in action, or make your own modifications to the data.

Good.