Who kicks better the penalties?

And now, who should kick the penalty? The Simpson's paradox

05/08/2012

It's FIFA Club World Cup 2012. Chelsea's coach hesitates on which player should kick a the penalty, so he looks at the statistics on penalty kicks to find out who is the most effective.

And now he's more troubled than before, because he meets a practical example of the Simpson's paradox. Do you want to help him?

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