Casio fx-82SOLAR Handbook Page 33

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Permutation
•Inmatningomfång: n r 0 (n, r : naturliga tal)
Formel: nPr
Kombination
•Inmatningomfång: n r 0 (n, r : naturliga tal)
Formel: nCr
Populationsstandardavvikelse
Stickprovsstandardavvikelse
Aritmetiskt medelvärde
n!
r!(nr)!
n!
(nr)!
n
n
i 1
n
(x
i
x)
2
n
x
2
– (x)
2
/ n
n
1
n – 1
i 1
n
(x
i
x)
2
x
2
– (x)
2
/
n
n – 1
o
n
i 1
n
x
i
x
n
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