Alguém conhece o gajo das fórmulas do Excel - universidade de Massachusetts ?

Predictive_models_for_the_number_Of_Students_At_youth_School_final_rev28022013

in http://www.dgeec.mec.pt/np4/64/%7B$clientServletPath%7D/?newsId=65&fileName=Predictive_modelsfinal_rev28022013.pdf