1. Nuclear magnetic resonance analysis apparatus comprising: (a) means for producing and receiving free induction decay signals from a plurality of known samples, (b) means for decomposing said free induction decay signals into calibration component equations, (c) means for forming explanatory variables from said calibration component equations, (d) means for forming principal components by linear transformation from said explanatory variables, and (e) means for forming a regression model equation of said principal components, (f) means for producing and receiving a free induction decay signal from a sample of interest, (g) means for decomposing the sample free induction decay signal of (f) above into component curves and for forming the principal components from said sample signal of (f) above, and (h) means for regressing and analyzing the sample free induction decay signal from said model regression equation to predict the true types, properties and quantities of the target nuclei and mass characteristics of sample materials.