LinearModelFit
LinearModelFit[{{x1,y1},{x2,y2},…},{f1,f2,…},x] constructs a linear model of the form β0+β1f1+β2f2+… that fits the yi for successive xi values.
LinearModelFit[data,{f1,f2,…},{x1,x2,…}] constructs a linear model where the fi depend on the variables xk.
LinearModelFit[{m,v}] constructs a linear model from the design matrix m and response vector v.
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