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Casio fx-260 User Manual

Casio fx-260
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— 31 —
n!
(nr)!
n!
n!(nr)!
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

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Casio fx-260 Specifications

General IconGeneral
BrandCasio
Modelfx-260
CategoryCalculator
LanguageEnglish

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