The misleading use of statistics to deceive, mislead, and confuse the public is epidemic in both the public and the media, with too many examples to cite. Sometimes the statistics are wrong, but just assumed to be correct, like the persistent myth that 50% of all American marriages end in divorce. Sometimes the individual who uses the statistic uses them sincerely but incorrectly to support an argument that the numbers don’t really  support, such as columnist Richard Cohen’s recent use of international longevity statistics to “prove” America has an inferior health care system. (Message to Cohen: Freedom includes freedom to take risks, and America has always had a risk-taking culture, which is something to be proud of. Health care is just part of the longevity equation; life-style is a large component, and perhaps the largest. Caged animals live longer than those in the wild, but their quality of life is much worse. The relative merits of the U.S. health care system is subject to debate, but longevity statistics do not settle the issue.)

And sometimes the statistics are just pure, blatant deceit, designed to mislead by the government and relayed uncritically by a news media that is either too eager to support the Obama Administration and too lazy to apply critical reasoning.

Today’s example: as the furor grows over virtual sexual molestation and mistreatment of innocent air passengers under the Transportation Security Administration’s new procedures at airports (such as here, here, and here), the TSA is rushing to defend itself, and has come up with this argument: the complainers are a small minority, and the vast majority of the country—80%, in fact— approves of the new procedures. This morning, the Sunday talk shows cited this statistic over and over again as if it settled the issue.

The statistic is completely misleading. Continue reading →