fx-991ZA PLUS 2nd edition | Non programmable | scientific calculator | CASIO
Casio FX-9750Glll-WE Graphing Calculator, Natural Textbook Display, White - Walmart.com
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