Sometimes your data have curved relationships between variables. Unfortunately, the real world isn’t always nice and neat like this. This relationship holds true regardless of where you are in the observation space.
Curved relationships between variables are not as straightforward to fit and interpret as linear relationships.įor linear relationships, as you increase the independent variable by one unit, the mean of the dependent variable always changes by a specific amount. In regression analysis, curve fitting is the process of specifying the model that provides the best fit to the specific curves in your dataset.
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