The Washington Post

Biggest polling error ever?

Lee Sechrest pointed me to this story. Here’s the BBC report:

Late last week, a major Brazilian research institute published a report on attitudes towards sexual harassment and rape. They asked 3,800 people across the country if “women who wear clothes that show off their body deserve to be attacked”. Some 65% said they agreed to some degree. . . .

Update 11 April 2014: The institute which published the research – the IPEA – last week revealed it had made a mistake in its findings. The correct figure for the percentage of Brazilians surveyed who agreed that women who dress in a revealing way “deserve to be attacked” was actually 26% they said – not 65%.

Huh? Who makes this kind of mistake? That’s huge.

Andrew Gelman is a professor of statistics and political science at Columbia University. His books include Bayesian Data Analysis; Teaching Statistics: A Bag of Tricks; and Red State, Blue State, Rich State, Poor State: Why Americans Vote the Way They Do.

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