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I have a data for number of cars and its causal variables are identified as GDP, population, urban fraction and fuel price but they have non-linear positive correlation but I don't know what that is. I want to predict the number of cars in future.

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  • $\begingroup$ Can you post some data here? Some plots? $\endgroup$ – user2974951 Sep 20 '19 at 10:58
  • $\begingroup$ A simple linear regression is giving negative coeffs. for all the variables. drive.google.com/file/d/1DJ85k_5Z3IArHlHYS7WjGvGFCTx9C6cG/… $\endgroup$ – kaerodre Sep 20 '19 at 20:35
  • $\begingroup$ This is not easy, you may be better off using a different model, which makes no assumptions on linearity, in contrast to linear regression. $\endgroup$ – user2974951 Sep 25 '19 at 13:32

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