Casio FX 260 User Manual - Page 33
Permutation, Combination, Population Standard Deviation, Sample Standard Deviation, Arithmetic Mean
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UPC - 079767157289
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Permutation • Input range: n ͧ r ͧ 0 (n, r : integers) • Formula: nPr ҃ n! (nҀr)! Combination • Input range: n ͧ r ͧ 0 (n, r : integers) • Formula: nCr ҃ n! n!(nҀr)! Population Standard Deviation n ⌺ (xi - x)2 n ҃ i ҃ 1 ҃ ⌺ x2 - (⌺x)2 / n n n Sample Standard Deviation n n - 1 ҃ ⌺ (xi - x)2 i ҃ 1 n - 1 ҃ ⌺ x2 - (⌺x)2 / n n - 1 Arithmetic Mean n o ҃ ⌺ xi i ҃ 1 ҃ ⌺x n n - 31 -
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n
!
(
n
²
r
)!
n
!
n
!(
n
²
r
)!
Permutation
• Input
range:
n
º
r
º
0 (
n
,
r
: integers)
• Formula:
n
P
r
µ
Combination
• Input
range:
n
º
r
º
0 (
n
,
r
: integers)
• Formula:
n
C
r
µ
Population Standard Deviation
³
n
µ
n
´
i
µ
1
n
(
xi
–
x
)
2
µ
n
´
x
2
– (
´
x
)
2
/
n
Sample Standard Deviation
³
n
–
1
µ
n
– 1
´
i
µ
1
n
(
xi
–
x
)
2
µ
´
x
2
– (
´
x
)
2
/
n
n
– 1
Arithmetic Mean
o
µ
n
´
i
µ
1
n
xi
µ
´
x
n