Adjunct Faculty and Awful Stats

Via a mailing list, probably via this Tyler Cowen post, an awful statistic about adjunct faculty: 35 years ago there were 44% more tenured faculty than adjuncts. Today there are 76% more adjuncts than tenured faculty, via @chronicle — Ángel Cabrera (@CabreraAngel) April 25, 2014 This is awful in two ways. First, it’s obviously a… Continue reading Adjunct Faculty and Awful Stats

The Real Pi Day(s)

Digits of pi, from http://www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html

Today is March 14th, 3/14 in the normal American way of writing dates, so you’ll find a lot of silliness on the web today talking about “π Day” due to the coincidental similarity with the first three digits of π (see, for example, Rhett’s annual post). But, of course, this is an archaic and local… Continue reading The Real Pi Day(s)

Niskayuna by Fermi

The other morning, I was lying in bed and for some reason, found myself wondering what the population of Niskayuna is. While this is easily Google-able, as I said, I was in bed, and didn’t want to get up to get a device with Internet connectivity. So I tried to Fermi-problem my way to an… Continue reading Niskayuna by Fermi

How Deep Does Veritasium’s Bullet Go?

Screen shot from the video of the block being shot into the air.

After a couple of very productive days where I closed my Twitter tab because it was too freakin’ annoying to read, I checked in briefly Wednesday morning, and found Rhett Allain and Frank Noschese discussing this Veritasium bullet-in-block experiment: Tom at Swans On Tea offers some analysis, and Rhett offers a video response doing out… Continue reading How Deep Does Veritasium’s Bullet Go?

White People Only Have 2.8 Friends

Screen shot of the Reutrers poll data, from the data explorer linked in the text.

There was some buzz Thursday about a poll showing that 40% of white people don’t have any friends of a different race. Ipsos/Reuters include a spiffy “data explorer” where you can make graphs like the one above. It does not appear to provide an easy way to get at the actual wording of the question,… Continue reading White People Only Have 2.8 Friends

Baseball Is Pretty Random

Batting averages compared to career totals for six famous players.

After Thursday’s post about sports and statistics, a friend from my Williams days, Dave Ryan, raised an objection on Facebook: There’s an unstated assumption (I think) in your analysis: that there is some intrinsic and UNALTERABLE statistical probability of getting a hit inherent in every hitter. If that is the case, then yes — a… Continue reading Baseball Is Pretty Random

Sports and Statistics: Nobody Deals Well With Randomness

The great xkcd nails sports commentary.

One of the chapters of the book-in-progress, as mentioned previously, takes the widespread use of statistics in sports as a starting point, noting that a lot of the techniques stat geeks use in sports are similar to those scientists use to share and evaluate data. The claim is that anyone who can have a halfway… Continue reading Sports and Statistics: Nobody Deals Well With Randomness

Dorky Poll: Rorschach Numbers

It’s been a really long time since I’ve done a Dorky Poll here, but I’m pretty fried at the moment, so here’s a kind of mathematical personality test: two numbers that do not uniquely define a sequence, but suggest some possibilities that reveal your innate character type and/or appropriate career path: Personality Test: What number… Continue reading Dorky Poll: Rorschach Numbers