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5. Getting the Data 17 The file fat.dat contains the raw data. The file fat.txt is a documentation file containing a brief description of the dataset. Acknowledgments Thanks to Dr. A. Garth Fisher best prices (1994) who generously provided the dataset to freely distribute and use for non-commercial purposes. Thanks also to Richard Wetzel, M.D., for enlightening correspondence about some of the difficulties best prices involved in body fat estimation and for tracking down some references. Appendix - Key to Variables in fat.dat Columns 3 - best prices 5 Case Number 10 - 13 Percent body fat using Brozek's equation, 457/Density - 414.2 18 - 21 Percent body fat using Siri's equation, 495/Density - 450 24 - 29 Density (gm/cm^3) 36 - 37 Age (yrs) 40 - 45 Weight (lbs) 49 - 53 Height (inches) 58 - 61 Adiposity index = Weight/Height^2 (kg/m^2) 65 - 69 Fat Free Weight = (1 - fraction of body fat) * Weight, using Brozek's formula (lbs) 74 - 77 Neck circumference (cm) 81 - 85 Chest circumference (cm) 89 - 93 Abdomen circumference (cm) "at the umbilicus and level with the iliac crest" 97 - 101 Hip circumference (cm) 106 - 109 Thigh circumference (cm) 114 - 117 Knee circumference (cm) 122 - 125 Ankle
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