Casio FX-260SOLAR Calculator User Manual


 
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n!
(nҀr)!
n!
n!(nҀr)!
Permutation
•Input range: n ͧ r ͧ 0 (n, r : integers)
•Formula: nPr ҃
Combination
•Input range: n ͧ r ͧ 0 (n, r : integers)
•Formula: nCr ҃
Population Standard Deviation
n
҃
n
i ҃ 1
n
(xi x)
2
҃
n
x
2
– (x)
2
/ n
Sample Standard Deviation
n 1
҃
n – 1
i ҃ 1
n
(xi x)
2
҃
x
2
– (x)
2
/ n
n – 1
Arithmetic Mean
o
҃
n
i ҃ 1
n
xi
҃
x
n