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Probability Functions
Factorial
To calculate the factorial of a displayed positive integer x (0 ≤ x ≤ 253), press
*
(the left–shifted
Gamma
To calculate the gamma function of a noninteger x, Γ(x), key in (x – 1) and press
. The x! function calculates Γ(x + 1). The value for x cannot be a negative
¹ *
integer.
Probability
Combinations
To calculate the number of possible sets of n items taken r at a time, enter n first,
¹ x
, then r (nonnegative integers only). No item occurs more than once in a
set, and different orders of the same r items are not counted separately.
Permutations
To calculate the number of possible arrangements of n items taken r at a time, enter
¹ {
n first,
once in an arrangement, and different orders of the same r items are counted
separately.
Seed
To store the number in x as a new seed for the random number generator, press
º §
.
Random number generator
To generate a random number in the range 0 ≤ x < 1, press
number is part of a uniformly–distributed pseudo–random number sequence. It
passes the spectral test of D. Knuth, Seminumerical Algorithms, vol. 2, London:
Addison Wesley, 1981.)
4–14
Real–Number Functions
File name 33s-E-Manual-1008-Publication(1st).doc
Printed Date : 2003/10/8
,
key).
, then r (nonnegative integers only). No item occurs more than
Size : 13.7 x 21.2 cm
º ©
Page : 386
¹
. (The
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