Math Prb (Probability) Operations - Texas Instruments TI-82 STATS Manual Book

MATH PRB (Probability) Operations

MATH PRB Menu
rand
2.20 Math, Angle, and Test Operations
To display the
MATH PRB
MATH NUM CPXPRB
1: rand
2: nPr
3: nCr
4: !
5: randInt(
6: randNorm(
7: randBin(
(random number) generates and returns one or more
rand
random numbers > 0 and < 1. To generate a list of random-
numbers, specify an integer > 1 for numtrials (number of trials).
The default for numtrials is 1.
[ numtrials ]
rand ( )
Tip: To generate random numbers beyond the range of 0 to 1, you
rand
can include in an expression. For example,
random number > 0 and < 5.
With each execution, the TI-82 STATS generates the same
rand
random-number sequence for a given seed value. The
TI-82 STATS factory-set seed value for
different random-number sequence, store any nonzero seed
value to . To restore the factory-set seed value, store
rand
or reset the defaults (Chapter 18).
rand
Note: The seed value also affects
randBin(
instructions (page 2.22).
menu, press  |.
Random-number generator
Number of permutations
Number of combinations
Factorial
Random-integer generator
Random # from Normal distribution
Random # from Binomial distribution
rand
randInt(
,
randä ä ä ä 5
generates a
is . To generate a
0
to
0
randNorm(
, and