Data = Equations: How To Write Equations That Fit The Data

This is a "HOW TO" manual for applying mathematical techniques to write equations that fit experimentally found data. The equations range from quadratic equations to single and multiple least square regressions to differential equations. There is a chapter on how to write a differential equation by studing the observed experimental data. This is not a mathematical textbook. There are no theorems or proofs, only practical applications.