# x02.txt # # Reference: # # Helmut Spaeth, # Mathematical Algorithms for Linear Regression, # Academic Press, 1991, page 304, # ISBN 0-12-656460-4. # # S Weisberg, # Applied Linear Regression, # Wiley, 1980, page 218. # # Discussion: # # For 12 young patients, catheters were fed from a principal vein # into the heart. The necessary catheter length was measured. # The height and weight of the patients was noted. # # There are 12 rows of data. The data columns include: # # I, the index; # A1, the height; # A2, the weight; # B, the catheter length. # # We seek a model of the form: # # B = A1 * X1 + A2 * X2. # 4 columns 12 rows Index Patient Height (inches) Patient Weight (pounds) Catheter Length (centimeters) 1 42.8 40.0 37 2 63.5 93.5 50 3 37.5 35.5 34 4 39.5 30.0 36 5 45.5 52.0 43 6 38.5 17.0 28 7 43.0 38.5 37 8 22.5 8.5 20 9 37.0 33.0 34 10 23.5 9.5 30 11 33.0 21.0 38 12 58.0 79.0 47