# TI-83 Instructions

## Scatter Diagram

#### Enter the data

1. Enter the x values into list `L1`.
2. Enter the y values into list `L2`.

#### Find the min and the max of x and y

1. Press `STAT`.
2. Use the arrow key to select the `CALC` menu title.
3. Select item #2, `2-Var Stats`.
4. Press `ENTER`. The phrase `2-Var Stats` appears in the window.
5. Press `2nd L1`.
6. Press the comma key.
7. Press `2nd L2`.
8. Press `ENTER`. A list of statistics appears.
9. Use the arrow key to scroll down to find the minimum and maximum of x (`minX` and `maxX`) and the minimum and maximum of y (`minY` and `maxY`). Record them.

#### Set up the Stat Plot

1. Press `2nd STAT PLOT` (in the upper left corner). The `STAT PLOTS` menu appears.
2. Use the arrow key to select one of the plots, say `Plot1`.
3. Press `ENTER`.
4. Use the left/right arrow keys to select `On`.
5. Press `ENTER`. This turns `Plot1` on. (The other plots should be turned off.)
6. Press the down arrow once. This allows you to select the type of plot.
7. Use the left/right arrows to select the scatter diagram type, the first one. (The icon looks like a little scatter diagram.)
8. Press `ENTER`.
9. Press the down arrow once. This allows you to select the list containing the x values.
10. Press `2nd L1`.
11. Press the down arrow again. This allows you to select the list containing the y values.
12. Press `2nd L2`.

#### Set up the Window

1. Press `WINDOW` (on the top row of buttons).
2. Next to `Xmin`, enter a value that is as least as small as the minimum x.
3. Press the down arrow once.
4. Next to `Xmax`, enter a value that is as least as large as the maximum x.
5. Press the down arrow.
6. Next to `Ymin`, enter a value that is as least as small as the minimum y.
7. Press the down arrow once.
8. Next to `Ymax`, enter a value that is as least as large as the maximum y.

#### Draw the Scatter Diagram

1. Press `GRAPH` (in the upper right corner). The scatter diagram appears.