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Wednesday, April 17, 2013

A Cautionary Data Tale

Colleague Wim Vandevelde from Brussels passes along this note and link, 
make sure you have your models straight:

" ... How biased selection and pre-processing of data, and an 
(unintentional ?) Excel reference error  yielded a much 
contested macro-economic ‘insight’ into 
the relationship between country debt ratios and economic growth – 
and how that correlation (if there was one to start with) 
was mistaken for causation... "  

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