Tuesday, December 27, 2011

So how do you know what you know? #100

Surprise:  NYT presents an unfinished, meaningless statistical analysis, claims it proves the opposite of what the numbers really say.  These cats are either completely unethical or mind crushingly stupid.

Or both.


The New York Times examined the [concealed-carry] permit program in North Carolina, one of a dwindling number of states where the identities of permit holders remain public. The review, encompassing the last five years, offers a rare, detailed look at how a liberalized concealed weapons law has played out in one state. And while it does not provide answers, it does raise questions.
More than 2,400 permit holders were convicted of felonies or misdemeanors, excluding traffic-related crimes, over the five-year period, The Times found when it compared databases of recent criminal court cases and licensees. While the figure represents a small percentage of those with permits, more than 200 were convicted of felonies, including at least 10 who committed murder or manslaughter. All but two of the killers used a gun.
All of these numbers are completely meaningless; in any large population, there will be some crime. The only way to see what these numbers mean is to compare concealed-carry holders to the general population. Fortunately, state-level murder data are easy to find.

North Carolina has a statewide murder rate of about 5 per 100,000. Even without counting manslaughter, that’s 25 murders committed per 100,000 North Carolinians every five years. There are about 230,000 valid concealed-carry permits in North Carolina, so by pure chance, you’d expect these folks to be responsible for nearly 60 murders over five years. And yet only ten of them committed murder or manslaughter. Instead of “rais[ing] questions,” the Times has demonstrated yet again that permit holders are more peaceful than the general population

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