Quadratic Regression Model Graph Shapes

A quadratic regression model graph will usually take the form of a parabola, which is a symmetrical U-shaped curve. This shape generally reflects the pattern of most real-world data sets, where the values tend to rise at first and then level off or even decrease after a certain point. The parabolic shape of quadratic regression also demonstrates that when one variable is a function of another, it often follows a pattern of more rapid change near the beginning, which then gradually declines as data points move farther away from the linear regression line.