TI-89 for statistics > Scatter Plot on the TI-89

## Scatter Plot on the TI-89: Overview

A **scatter plot** is a type of graph that uses Cartesian coordinates on an x-y plane to display variables for two sets of data. This type of graph can help you visualize the distribution of data and make predictions about your data. Making a scatter plot is very easy on the TI-89 graphing calculator and involves three phases: Accessing the data matrix editor, inputting your X and Y values and then graphing the data.

## Scatter Plot on the TI-89: Steps:

Watch the video or read the steps below:

**Sample problem:** make a scatter plot for the following data: (1,6), (2,8), (3,9), (4,11), and (5,14).

*Accessing the Data Matrix Editor*

Step 1: Press APPS, then scroll to the “Data/Matrix” editor, press ENTER and then select “new.”

Step 2: Scroll down to “Variable” and type in desired name. For example, type “scatterone”. Note: you don’t have to press the ALPHA key to access the alpha keypad. Just type!

Step 3: Press ENTER ENTER.

*Inputting X and Y Values*

Step 1: Enter your X values under the “c1” column. Press ENTER after each entry.

For our list, you would need to press:

1 ENTER

2 ENTER

3 ENTER

4 ENTER

5 ENTER

Step 2: Enter your Y values under the “c2” column (use the arrow keys to scroll to the top of the column). Press ENTER after each entry.

For our list, you would need to press:

6 ENTER

8 ENTER

9 ENTER

11 ENTER

14 ENTER

*Graphing the Data*

Step 1: Press F2 for Plot Setup.

Step 2: Press F1.

Step 3: Select “scatter” next to “plot type”

Step 4: Select “box” next to “mark type”

Step 5: Scroll to the “x” box and then press ALPHA ) 1 to enter “c1”.

Step 6: Scroll to the “y” box and then press ALPHA ) 2 to enter “c2”.

Step 7: Press ENTER ENTER.

Step 8: Press the diamond key F3 to view your scatter plot.

Step 9: Press F2 and then press 9 so that the scatter plot will be drawn in the correct window for the data.

*That’s it! *

Check out our YouTube channel for more tips and help!

how do you plot the points, When I go to graph it says window variables domain

The Window variables domain error occurs when the minimum value for x or y is larger than the maximum value…check your inputs carefully.

Regards,

Stephanie

How do I get a line best fit with my scatter plot?

See: This YouTube video . Regression is the same as the line of best fit. You can skip the data entry part, as you’ve already entered your data.