Special note about linear regression and diagnostics: This process will allow you to compute the values for the linear regression, the correlation coefficient, and the coefficient of determination.

1. Make sure you have already turned on your diagnostics, as described above.
2. Input the data points into two lists (one for the x-values and one for the y-values) using to the procedure above.
3. Press STAT.
4. Press the right arrow key to scroll over to the CALC menu.
5. Press the down arrow key to scroll down until LinReg(a+bx) is highlighted and press ENTER.
6. Input the list in which the x-values are stored next to “XList.”
7. Input the list in which the y-values are stored next to “YList.”
8. Leave FreqList blank.
9. Next to “StoreRegEQ,” input Y₁ by pressing VARS, press the right arrow key to highlight Y-VARS, and press ENTER twice.
10. Highlight Calculate and press ENTER. The calculator should display the desired values.
11. Press Zoom and 9 (ZoomStat) to view the scatterplot and LinReg line.