# TI-83 Instructions

## Selecting a Simple Random Sample

- Select a Single Member
- Let
*N* be the size of the population.
- Press
`MATH`

. The `MATH`

menu titles appear.
- Select the
`PRB`

menu title.
- Press
`ENTER`

. The `PRB`

menu appears.
- Select
`randInt`

, item #5. The expression `randInt(`

appears in the display.
- Enter
`1`

.
- Press comma.
- Enter the value of
*N*.
- Press
`)`

.
- Press
`ENTER`

. A random integer from 1 to *N* appears in the display.

- Select a Sample of size
*n*, with Replacement
- Follow the instructions to select a single member to get the first member.
- Press
`ENTER`

repeatedly. Each time, a new random integer appears.
- After pressing
`ENTER`

*n* times, you have a sample of *n* members (possibly with repetitions).

- Select a Sample of size
*n*, without Replacement
- Follow the instructions to select a sample, with replacement, to get a collection of
*n* integers.
- For each repeated value, reject it and press
`ENTER`

again.
- Once you have
*n* distinct numbers, you have your sample.