Gutin et al. (A-18) compared three measures of body composition, including dual-energy x-ray absorptiometry (DXA). Subjects were apparently healthy children (21 boys and 22 girls) between the ages of 9 and 11 years. Among the data collected were the following measurements of bodycomposition compartments by DXA. The investigators were interested in the correlation between all possible pairs of these variables.

Percent Fat Fat Mass Fat-Free Mass Bone Mineral Content Fat-Free Soft Tissue 11.35 3.8314 29.9440 1.19745 28.7465 22.90 6.4398 21.6805 0.79250 20.8880 12.70 4.0072 27.6290 0.95620 26.6728 42.20 24.0329 32.9164 1.45740 31.4590 24.85 9.4303 28.5009 1.32505 27.1758 26.25 9.4292 26.4344 1.17412 25.2603 23.80 8.4171 26.9938 1.11230 25.8815 37.40 20.2313 33.8573 1.40790 32.4494 14.00 3.9892 24.4939 0.95505 23.5388 19.35 7.2981 30.3707 1.45545 28.9153 29.35 11.1863 26.8933 1.17775 25.7156