Brendan Nyhan

Wanted: statistically literate journalists

Matthew Yglesias slams Gregg Easterbrook for this asinine commentary on the recent cluster sampling estimate of deaths in Iraq:

The latest silly estimate comes from a new study in the British medical journal Lancet, which absurdly estimates that since March 2003 exactly 654,965 Iraqis have died as a consequence of American action. The study uses extremely loose methods of estimation, including attributing about half its total to “unknown causes.” The study also commits the logical offense of multiplying a series of estimates, then treating the result as precise. White House officials have dismissed the Lancet study, and they should. It’s gibberish.

As Yglesias points out, Easterbrook seems to have no understanding of statistics:

The authors used a statistical method that, as they perfectly well knew, doesn’t generate especially precise results. That’s why when they calculated the confidence interval for their estimate it turned out to be rather wide. The 654,965 number is the middle point of the confidence interval. The true number could very easily be thousands higher or lower than that, but the true number is extremely likely to fall somewhere within the band they laid out. This isn’t hard stuff and it certainly isn’t gibberish.

So how does Easterbrook have a resume like this?

In addition to writing Tuesday Morning Quarterback, Gregg Easterbrook is the author of “The Progress Paradox: How Life Gets Better While People Feel Worse” and other books. He is also a contributing editor for The New Republic, The Atlantic Monthly and The Washington Monthly, and a visiting fellow at the Brookings Institution.