For the TI-83 ...........................
1. First, create an extra list to
hold your random variable info.
This is not a necessary step, but by creating an extra list of whole numbers starting at zero,
it is easier to keep track of the probability you are referencing.
[STAT] Edit, then highlight L1
At NAME=, key: RV(or something to denote random variable) ENTER
So, for example, to fill this list with 100 numbers from 0 to 100,
key: [2nd] [LIST] OPS SEQ(X,X,0,100) [STO] RV [ENTER]
2. Create the probabilities. For example, if n=10, p=.2, then key:
[2nd] [DISTR] binompdf(10, .2) [STO] [L1] [ENTER]
To view the table, key: [STAT] Edit [ENTER]
For the TI-82 ...................................
use the calculator's TABLE to hold the distribution table.
Put the formula in a safe place for now and future use this way:
At Y0 (or any Y= location that won't be cleared) key in the formula:
N nCr X * P^X*(1-P)^(N-X)
Change the table setup to increase by one.
Key: [2nd] [TblSet] TblMin=0 deltaTBL=1
Thereafter, the only things that need to be entered are n and p.
At the home screen, if n=10 and p=.2,
key: 10 [STO] N [ENTER] .2 [STO] P [ENTER]
To view the table, key: [2nd] [TABLE]