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
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Casio fx-991EX keeps giving math error for simple calculations like ((1/2)/2) and sin inverse (10) etc. Any idea on how to fix this? Is there a chance that the calculator may be
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