A Weight‐Watcher's Guide to Least‐Squares Fitting Free

1professor and associate director, School of Physics, Georgia Institute of Technology, Atlanta, GA 30332‐0430. His interests include atomic scattering, ion‐atom interaction potentials, and ion runaway; nonlinear behavior involving numerical solutions of differential equations with stochastic sources; computer‐interfaced measuring devices in student laboratories; and the Introductory University Physics Project (IUPP).