Every day we are bombarded with statistics about sex. How many times we think of it a day, how many times we do it, and with how many people. But how do we know which of those numbers can be believed?

David Spiegelhalter's, one of our favourite statisticians, has written a book all about the stats of sex, called *Sex by numbers*. In this podcast Spiegelhalter gives us some of his favourite snippets from the book, which are as informative as they are entertaining. (You can also watch our interview as a video or read the associated article.)

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