Finding the Line of Best Fit Using the TI-86 2025

1. Click ‘Get Form’ to open it in the editor.
2. To enter your data, navigate to '2nd STAT' and select 'F2: Edit'. Clear any previous entries by highlighting the column header for xStat and pressing clear, then enter. Repeat this for the yStat column.
3. Input your x values into the xStat column. After entering each value, press enter to move to the next input. Do the same for your y values in the yStat column.
4. Ensure that the fStat column has an entry of 1 for each (x, y) pair. Remove any extra entries by highlighting them and pressing Del.
5. To create a scatter diagram, go back to '2nd STAT', select 'F3: PLOT', and choose 'F1: PLOT 1'. Set it up by highlighting ON and entering. Specify xlist as xStat and ylist as yStat.
6. Adjust your viewing window by selecting 'Graph', then 'F2: Wind'. Set appropriate ranges for x and y that include all data points.
7. To calculate the line of best fit, exit back to the home screen, go to '2nd STAT', select 'F1: Calc', then 'F3: LinR'. Press Enter to view your results.
8. Finally, draw the line of best fit on your scatter diagram by exiting back to 'F4: Draw' and selecting 'MORE' followed by 'F1: DRREG'.

Start using our platform today for free to streamline your document editing experience!