When there is more than one f(x), we may speak of multilinear (or multiple) regression. Other authors3 state that F is linear when the partial derivatives of each coefficient are not functions of other coefficients.So far, we have worked with the straight line equation F(x) = mx+c where there is just one predictor variable function. where fi(x) is a simple or complex function of x. It means that the function to be fitted is in the form F(x) = a1*f1(x) + a2*f2(x). By A Guide to Microsoft Excel 2013 for Scientists and Engineers (0th Edition) Edit edition Solutions for Chapter 8 Problem 5E: MULTILINEAR REGRESSIONIn the term linear regression, the word linear is not used to denote a straight line.
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