Education Technology

# Knowledge Base

## Solution 11707: Calculating Linear Regressions on the TI-89 Family, TI-92 Family, and Voyage 200™ Graphing Calculators.

### How do I calculate a linear regression on the TI-89 family, TI-92 family, and Voyage 200 graphing calculators?

The example below will demonstrate how to calculate a linear regression for a given set of data on the TI-89 family, TI-92 family, and Voyage 200.

Data for this example.

x values: 5, 9, 7, 11
y values: 12, 15, 14, 17

Solution:

• Press [APPS][6][3] Press the down arrow twice. (If the Apps Desktop is on, press [APPS], select Data/Matrix Editor, and press [3].)
• In the box beside Variable: type a variable name using the alpha characters. (e.g. TEST)
• Press [ENTER][ENTER]
• Enter the x values under c1. Press [5][ENTER][9][ENTER] etc.
• Enter the y values under c2. Press [1][2][ENTER][1][5][ENTER] etc.
• Press [F5], then the right arrow, then [5]
• Press the down arrow, then input c1 (Indicates the x variables are in c1)
• Press the down arrow, then input c2 (Indicates the y variables are in c2)
• To graph the line, select an equation number after Store RegEQ to...

• Press [ENTER][ENTER]

The dialog box with the linear regression variables will be displayed.

Please see the TI-89 family, TI-92 family, and Voyage 200 guidebooks for additional information.