Square Root Curve

By Kardi Teknomo, PhD.

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Data:

Using the same data as other curves, we may want to try another model: square root model ( ). To do model transformation, first we need to transform the x values of our data into so that the transformed model is . There is no transformation of model parameters in this case.

When we plot sqrt(x) and y, we can obtain almost exact linear model with higher R-squared of 0.9999. The square root model is therefore

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See Also: Regression tutorial, Power Rules, Logarithm Rules, Kernel Regression

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Teknomo, Kardi. Non-Linear Transformation for Regression. http:\\people.revoledu.com\kardi\ tutorial\Regression\NonLinear\