Not-Quite-in-Time Logistics

Writing in the Atlantic, Helen Lewis explains shortages and panic buying as a failure of efficiency; the weakness of just-in-time logistics. Sorry Helen, but you’re a logistics n00b; even this old retired Lieutenant Colonel knows about arcane loggie stuff like stock levels and re-order points (zero is NOT a good re-order point).  When the militaryContinue reading “Not-Quite-in-Time Logistics”

(Clinical) Trial of the Century

The World Health Organization steps up to the coronavirus plate with what appears to be history’s most ambitious screening experiment. On Friday, the World Health Organization (WHO) announced a large global trial, called SOLIDARITY, to find out whether any can treat infections with the new coronavirus for the dangerous respiratory disease. It’s an unprecedented effort—anContinue reading “(Clinical) Trial of the Century”

Make Every Vote Count

Every semester, I begin my introductory biostatistics class with a simple “show of hands” experiment based on the Bouba-Kiki effect.  Prior to the experiment I “volunteer” two students at random to count hands, and when hands are raised, each of my volunteers counts silently and independently.  Invariably, the counts DO NOT MATCH.  We briefly discussContinue reading “Make Every Vote Count”

Tsoo Tsoon to be a Tsunami

Andrew Gillen at the Texas Public Policy Foundation says “Two Tsunamis are About to Hit Higher Education,” when :..the Department of Education released post graduate earnings and debt data broken down by college program — which will have a revolutionary impact on higher education.” A bit of poking around on the web gets you to theContinue reading “Tsoo Tsoon to be a Tsunami”

Counting is DIFFICULT

Eleven million? or 22 million? A new Yale/MIT study estimates the illegal alien population in the US somewhere in the range of 16.5 to 29.1 million (for us statisticians, that’s 22.8 ± 6.3 million). That’s a margin of error larger than the entire population of Los Angeles (3.99 million).  Worse yet, this estimate suggests thatContinue reading “Counting is DIFFICULT”

News Flash! Men and Women are Different…

..despite the fact that some folks wish is wasn’t so Neurosexism: the myth that men and women have different brains https://t.co/OOtJaICQ0t — Gina Rippon (@ginarippon1) February 27, 2019 In fact, the National Institute of Health requires that sex be included as a variable in all studies: Sex can influence health & disease in many ways,Continue reading “News Flash! Men and Women are Different…”

Past performance is no indication of future…

I am such a slow pony.  I’ve just web-surfed my way into discovering Rob Hyndman’s Time Series Data Library, which has hundreds of time-series datasets suitable for every teaching need.  I was looking for one of my old faves, from that hoary old classic, Forecasting, Time Series, and Regression, and voila! there it is.  

To every thing, there is a season

Most of us are aware of the seasonal cycle of influenza outbreaks, which for Americans peak in the winter. In a new paper, Micaela Martinez, PhD, a scientist at the Columbia University Mailman School of Public Health, makes a case that all infectious diseases have a seasonal element. The “Pearl” article appears in the journalContinue reading “To every thing, there is a season”