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How to Do Regression in GeoGebra

In order to perform a regression in GeoGebra, use Spreadsheet, where it’s easy to add or change the information used in the regression analysis.

GeoGebra Instruction 1

1.

Open Algebra View, Graphics View and Spreadsheet under

View in

Menu.

2.

In column A, enter the

x

-coordinates of your data points. In column B, input the

y

-coordinates of your data points.

3.

Select all the cells in columns A and B that you have entered coordinates into and click Two Variable Regression Analysis

in Toolbar.

4.

In the drop-down list in the bottom-left corner of your window, select the regression model you want to use (linear, polynomial, exponential etc.).

Your model will be given as a function y = $\dots$ to the right of the drop-down list after you have selected a regression model. The graph of the model will also be displayed along with your data points. You can copy the graph to Graphics View by clicking Copy to Graphics View at the top of the window. Once the graph is copied, the data points will appear in Algebra View as well.

The picture below shows a graph that has been copied over to Graphics View as described in Step 4 in Item 4 above.

Screenshot of GeoGebra showing a parabola lying close to some data points

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