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    The problem for David Spiegelhalter, the Winton professor of the public understanding of risk at the University of Cambridge,was always how to avoid sex taking all the fun out of statistics. Sex, after all, is something everybody knows all about; statistics on the other hand, represent an arcane mystery closed to almost everyone. One is commonplace, the other is exotic. I am glad to report that the professor triumphs about 75 per cent of the time.
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    Sex by Numbers: What Statistics Can Tell Us About Sexual Behaviour by David Spiegelhalter

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    Sex by Numbers (Wellcome): David Spiegelhalter: kksoyproducts.com: Books

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    Sex by Numbers: What Statistics Can Tell Us About Sexual Behaviour (Wellcome)

    But for most of us, this only makes the truth more tantalising. They are the largest scientific studies of sex in the world to date, lifting the lid on the sex lives of over 45, people. Professor David Spiegelhalter has explored this data and more in his book, Sex by Numbers , that accompanies the Wellcome Collection's Sexology Season. Scroll down for a look through the window into the world of sex This graph shows the average number of times people have had sex with someone of the opposite sex in the past 4 weeks, by survey year.
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    In which, he draws on data from The National Survey of Sexual Attitudes and Lifestyles the widest survey of sexual behaviour since the Kinsey Report to answers crucial questions like what are we all doing? How often? And how has it changed?
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