TI-CBL interfacing

Crickets As Thermometers

Best Fit Line

1. Press STAT and arrow right.
2. A menu appears.
3. Choose LinReg. This will give you an equation for a Linear Regression (bests fit line). LinReg (ax+b) will appear.
4. Type: (include the comma) 2nd L1, 2nd L2 and then ENTER.

• LinReg
• y=ax+b
• a=...
• b=...
• r=...
• will appear on the screen.

1. Press the Y = key.
2. If there are any equations there, clear them out by using the arrow keys to place the cursor right after the = sign. Press CLEAR.
3. Press VARS. A menu will appear.
4. Choose: Statistics. A menu will appear.
5. Arrow right twice to darken EQ which stands for equation. A menu will appear.
6. Choose RegEq (Regression Equation). The equation for Y1= will appear.
7. Press GRAPH.

This will display your original points PLUS your line of best fit.

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