Probability - Texas Instruments TI-30X - IIS Scientific Calculator Teachers Manual

Scientific calculator
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Probability

Keys
1. H displays the following menu of
functions.
nPr
Calculates the number of
possible permutations.
nCr
Calculates the number of
possible combinations.
!
Calculates the factorial.
Generates a random 10-
RAND
digit real number between
0 and 1.
RANDI
Generates a random
integer between 2 numbers
that you specify.
1
© 1999 T
I
I
EXAS
NSTRUMENTS
NCORPORATED
Notes
The examples on the transparency masters
assume all default settings.
A combination is an arrangement of
objects in which the order is not important,
as in a hand of cards.
A permutation is an arrangement of
objects in which the order is important, as
in a race.
A factorial is the product of all the positive
integers from 1 to n , where n is a positive
whole number
69.
To control a sequence of random numbers,
you can store (L) an integer to RAND
just as you would store values to memory
variables. The seed value changes randomly
when a random number is generated.
For RANDI, use a comma to separate the 2
numbers that you specify.
TI-30X ÙS: A Guide For Teachers
11
68

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