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Least Square Fitting

Perpendicular fitting

The segments are perpendicular to the red line. Move the line and try to get an optimal fitting. The line is optimal when the sum of the squares is minimized. Do not show the line of best fit until you have found a best fit by yourself.

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

Vertical fitting

The segments are vertical. Move the line and try to find an optimal fitting. Do not show the line of best fit until you have found a best fit by yourself.

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

The green line is made with the Best line fit tool. Which method is used by GeoGebra, a perpendicular or vertical fitting?