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Fit

FilledSmallSquare Fit[data, funs, vars] finds a least-squares fit to a list of data as a linear combination of the functions funs of variables vars.

FilledSmallSquare The data can have the form , , ... , , , , ... , , ... , where the number of coordinates x, y, ... is equal to the number of variables in the list vars.

FilledSmallSquare The data can also be of the form , , ... , with a single coordinate assumed to take values 1, 2, ... .

FilledSmallSquare The argument funs can be any list of functions that depend only on the objects vars.

FilledSmallSquare Fit[, , ... , 1, x, x^2, x] gives a quadratic fit to a sequence of values . The result is of the form + x + x^2, where the are real numbers. The successive values of x needed to obtain the are assumed to be 1, 2, ... .

FilledSmallSquare Fit[, , , , ... , 1, x, x^2, x] does a quadratic fit, assuming a sequence of x values .

FilledSmallSquare Fit[, , , ... , 1, x, y, x, y] finds a fit of the form + x + y.

FilledSmallSquare Fit always finds the linear combination of the functions in the list funs that minimizes the sum of the squares of deviations from the values .

FilledSmallSquare Exact numbers given as input to Fit are converted to approximate numbers with machine precision.

FilledSmallSquare See Section 1.6.6 and Section 3.8.2.

FilledSmallSquare Implementation Notes: see Section A.9.4.

FilledSmallSquare See also: FindFit, Interpolation, InterpolatingPolynomial, Solve, PseudoInverse, QRDecomposition, FindMinimum.

FilledSmallSquare Related packages: Statistics`LinearRegression`.

FilledSmallSquare New in Version 1.

Further Examples