Linear model query

The standard method to extend linear regression to a non-linear relationship between the dependent and independent variables, has been to the the linear model with a polynomial function.

I read the above from a spline model then i got a little bit confused i thought a model is considered linear if the parameters are linear

Hi @mutinda06, It would be better if you could share the link of the article or the source of the above-mentioned statement.

Also, when we say ‘linear models’, we imply that these models are able to capture the linear relationship of the data.

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