The Professor's Notes

Where my thoughts and your eyes (and now ears!) collide

Archive for June, 2005

BTS – National Transportation Statistics 2004

Posted by Steve Brady On June - 20 - 2005ADD COMMENTS

BTS – National Transportation Statistics 2004

I am sure many of you have asked yourselves “how can I get my hands on the actual data, rather than rely on the new reporters to give me their (often incorrect) interpretation?”

This link is one of the answers. On this link, you not only have the National Transportation Statistics (NTS) 2004 report, but more conveniently, you have it with excel and csv (comma delimited) text files. The significance of this is simple: you can conduct your own data mining, reviewing and slicing the data, or conducting statistical analyses as you see fit.

Hint: when you have a homework assignment, or a project, that requires you to analyse some data–perhaps in a statistics class, and you need to do a forecast, or conduct regression, here is a ready source of useful, and informational, data.

Happy hunting, and if you find something interesting, please, come back here, and share it with the rest of the class!

The Prof

Speeders’ 5-10 mph ‘free pass’ costs lives, report says – Yahoo! News

Have you ever read a news story that just seemed, well, odd? This, to me, is one of those stories.

Perhaps I have been tainted by a book I recently read and enjoyed, titled “Freakonomics.” In that book, an economist slices data in ways that challenge the “conventional” views of the world, and shows how an understanding of data can help one make more sense of the world around us.

One of my favorite vignettes in the book is the discussion about airline vs automobile fatalities. Yes, we all “know” that it is safer to fly than to ride in a car. That’s conventional wisdom. The authors point out, however, that if you evaluate the data differently, by assessing time spent “in the seat” then it turns out to be a dead heat (no pun intended.) the number of fatalities per hour spent traveling in that mode is statistically even. Go figure.

So that leads me to this story. Here we have all the makings of bad journalism–reporting misleading facts, quoting of inflammatory language, and the obligatory “counter view” at the end of the article.

Let’s tackle the facts. In the article you will find this:

“We should have experienced a significant decline in speeding-related fatalities, given the tremendous gains in safety-belt use coupled with the increasingly safe design of vehicles,” said Lt. Col. Jim Champagne of the Louisiana Highway Safety Commission and chairman of the GSHA.

That statement follows a paragraph where we are informed that “The number of speeding-related deaths is not declining” and “Speeding is a major factor in about one-third of the 42,000 traffic deaths a year in the USA.”

Hmmm… The “numbers” are not declining? Sounds like we have a problem on our hands, right? As the article points out, vehicles are far safer than ever before, and yet the “numbers” are not declining.

But wait just one minute! The article then points out that “The nation’s traffic fatality rate last year was a record low of 1.46 deaths per 100 million vehicle miles traveled, according to the National Highway Traffic Safety Administration.” Now we begin to see that in fact, fatalities have declined, and we are just spending more and more time on the road. It’s not that speeding is more deadly. It’s that we are spending more and more time on the road.

But wait, there’s more! The author can’t just let the record stand corrected. The author uses the word “But.” Yup, after telling the reader that the actual rate is lower the author points out “But the number of people killed in accidents each year has remained fairly constant as the number of vehicles and miles driven increased.”

So now we see that perhaps Lt Col Champagne was speaking in hyperbole when he argued against speeding. What’s worse, he called the accidents “carnage” on the highways. Inflammatory language, to be sure. Especially since, according to Dictionary.com, carnage is “Massive slaughter, as in war; a massacre.”

Bottom line? Read carefully–and look for all the details. Ask questions about the data presented. In this case, the article at least presented the death rate, and not just raw data. Imagine if the author had chosen to leave just that one bit of data out.

So the question I have is: Which do readers notice more, and why?

Class dismissed.

Grocery Store Wars | Join the Organic Rebellion

Posted by Steve Brady On June - 11 - 20051 COMMENT

Grocery Store Wars | Join the Organic Rebellion

Okay, so first, I haven’t been here in quite a while… and now that I am blogging again, it’s about a Star wars spoof. Not only that, about an issue that, honestly, I have strong and somewhat opposing opinions.

That said–you HAVE to go see this… “Cuke Skywalker” fights against his father ‘Darth Tater” (no relation to “Tater salad” –Ron White…) Of course, Darth Tater is now “more chemical than vegetable…”

Seriously–don’t take this seriously. But enjoy the skills demonstrated.

And then, please, let me know YOUR opinions about chemicals and genetic modifications on the farm.

The Prof!

Featured Posts from the Archives

TAG CLOUD

About Me

Many have asked, so let me tell you: I am a professor. BA, Political Science MPA (Master’s of Public Administration) MS Logistics Management PhD Business Administration (Business Logistics, supporting field Industrial Engineering) I have a strong professional interest in Collaborative Supply Chain Management, RFID in the Supply Chain (EPC), and Research Methods. I have a strong personal interest in political issues, and military affairs having retired from the US Air Force after 20 years.

Twitter

    Photos

    flatironTwo FaithsThe sideEarly_AM_10_01_09_DSC01726_pregamma_1_fattal_alpha_0.1_beta_0.8_saturation_1_noiseredux_0on_Lake_10_01_09_DSC01731_pregamma_1_fattal_alpha_0.1_beta_0.8_saturation_1_noiseredux_0Andraka House 10_01_09_DSC01727_pregamma_1_fattal_alpha_0.1_beta_0.8_saturation_1_noiseredux_0At the bottom of the Grand Canyon of the EastTMI HDR v1