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-991MS | CASIO
Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black : Amazon.in: Office Products
Complex Number calculations on Casio fx-991-ES Plus (in Hindi) - YouTube
Which is the better calculator: Casio fx991ms or fx-991es PLUS? - Quora
Kalkulator CASIO FX-991ES PLUS 2nd Edition
Casio fx-82AU Plus 2 Scientific calculator, Health & Nutrition, Health Monitors & Weighing Scales on Carousell