So what's the deal with the Birthday Paradox and the Word Cup Football?
As a data scientist I'm always happy when a newspaper spends time in explaining something from the field of Statistics. The Guardian is one of those newspapers that does a very good job at that. @alexbellos often contributes to the Guardian and I must say I often like the stuff he writes. Just recently he wrote a piece entitled " World Cup birthday paradox: footballers born on the same day ", which was taken over by the Belgian quality newspaper De Standaard. The headline there was " Verbazend veel WK-voetballers zijn samen jarig ", which roughly translates to "Surprisingly many Word Cup players share birthdays". Notice already that the headline in De Standaard is less subtle than the one in The Guardian. Alex Bellos starts with explaning what the birthday paradox is: The birthday paradox is the surprising mathematical result that you only need 23 people in order for it to be more likely than not that two of them share the same birthday. He then ...