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Casio FX-991ES Plus 2nd Edition Scientific Calculator 417 function FX-991 New | eBay
Casio FX-991EX calculator Pocket Scientific Black, White
Trying to calculate the first and third quartile with my casio fx-991EX but I'm not getting accurate results, any help? The correct quartiles are: Q1= 2.75 , Q3= 7.25 : r/calculators
fx-991ES PLUS 2nd edition | Non programmable | scientific calculator | CASIO