We examine the striking patterns between world record performances in different sports and ask what events an ambitious nation should target as the 'easiest' in which to win Olympic medals. How does Olympic success correlate with a nation's GNP? How does the location of the Olympics affect the chance of record breaking? And how can simple statistics help us understand the likelihood of winning streaks and the chance that an innocent athlete will fail a drugs test?

This is part of Professor Barrow's Maths in Sport series.

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