=+a 1 b1x1 1 b2x2 from the R software:

obs 1 2 flth 1 92017 .0026900 278.78 2 51830 .0030000 124.53 3 17236 .0000196 22.65 4 15776 .0000360 28.68 5 33462 .0004960 32.66 6 243500 .0038900 604.70 7 67793 .0011200 27.69 obs 1 2 flth 8 23471 .0006400 14.18 9 13948 .0004850 20.64 10 8824 .0003660 20.60 11 7699 .0002290 16.61 12 15791 .0014100 15.08 13 10239 .0004100 18.05 14 43835 .0000960 99.71 15 49793 .0000896 58.97 16 40656 .0026000 172.58 17 50774 .0009530 44.25 Coefficients:

Estimate Std.

Error t

value Pr

(>|t|)