What is the quadratic regression equation for the data set?
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A quadratic regression is the process of finding the equation of the parabola that best fits a set of data. As a result, we get an equation of the form:
y=ax²+bx+c where a≠0 .
The best way to find this equation manually is by using the least squares method.
That is, we need to find the values of a,b, and c such that the squared vertical distance between each point (xi,yi) and the quadratic curve
y=ax²+bx+c
is minimal.
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