dataset = lobster begin description From DeLury, D.B. (1947), "On the Estimation of Biological Populations," Biometrics, 3, 145-167. Should need a log(y) transformation. The data are lobster catches from May 23 to June 12. end description begin variables Col 0 = obs Col 1 = y = catcheffort Col 2 = x1 = totcatch Col 3 = x2 = toteffort Col 4 = x3 = pounds Col 5 = x4 = traps end variables begin data 1 82 0 0 6995 8470 2 75 7 8 5851 7770 3 94 13 16 3221 3430 4 80 16 19 6345 7970 5 83 22 27 3035 4740 6 89 25 32 6271 8144 7 70 32 40 5567 7965 8 58 37 48 3017 5198 9 64 40 53 4559 7115 10 55 45 61 4721 8585 11 52 50 69 3613 6935 12 45 53 76 473 1060 13 45 54 77 928 2070 14 49 55 79 2784 5725 15 45 57 85 2375 5235 16 48 60 90 2640 5480 17 43 62 96 3569 8300