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More or Less: How Useful are Statistics About Sex?

How useful are statistics about sex? Author and statistician Sir David Spiegelhalter explains when you should and shouldn鈥檛 trust bedroom-related figures.

10 minutes

Last on

Wed 13 May 2015 16:20GMT
大象传媒 World Service Online

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  • Wed 13 May 2015 16:20GMT
    大象传媒 World Service Online