Minitab uses least squares estimation to calculate the coefficients.
In matrix terms, the least squares estimates of the coefficients are:
b = (X'X)-1X'y
For more information on coefficients of higher order models, see Cornell1.
|X||design matrix |
|y||response column |
- J.A. Cornell (1990). Experiments With Mixtures: Designs, Models, and the Analysis of Mixture Data, John Wiley & Sons.