Frequencies for first 10,000 rows of dbirwt variable in natlterr2000 dataset : Birthweight | Freq. Percent Cum. ------------+----------------------------------- 340 | 1 0.01 0.01 425 | 1 0.01 0.02 454 | 2 0.02 0.04 482 | 2 0.02 0.06 510 | 4 0.04 0.10 539 | 5 0.05 0.15 567 | 3 0.03 0.18 595 | 2 0.02 0.20 624 | 4 0.04 0.24 652 | 2 0.02 0.26 680 | 4 0.04 0.30 709 | 4 0.04 0.34 737 | 4 0.04 0.38 765 | 4 0.04 0.42 794 | 1 0.01 0.43 822 | 2 0.02 0.45 851 | 4 0.04 0.49 879 | 1 0.01 0.50 907 | 11 0.11 0.61 936 | 6 0.06 0.67 964 | 3 0.03 0.70 992 | 3 0.03 0.73 1021 | 4 0.04 0.77 1049 | 4 0.04 0.81 1077 | 3 0.03 0.84 1106 | 2 0.02 0.86 1134 | 4 0.04 0.90 1162 | 4 0.04 0.94 1191 | 2 0.02 0.96 1219 | 4 0.04 1.00 1247 | 2 0.02 1.02 1276 | 5 0.05 1.07 1304 | 1 0.01 1.08 1332 | 2 0.02 1.10 1361 | 15 0.15 1.25 1389 | 6 0.06 1.31 1418 | 2 0.02 1.33 1446 | 9 0.09 1.42 1474 | 9 0.09 1.51 1503 | 4 0.04 1.55 1531 | 3 0.03 1.58 1559 | 6 0.06 1.64 1588 | 11 0.11 1.75 1616 | 7 0.07 1.82 1644 | 9 0.09 1.91 1673 | 5 0.05 1.96 1701 | 4 0.04 2.00 1729 | 8 0.08 2.08 1758 | 2 0.02 2.10 1786 | 9 0.09 2.19 1814 | 32 0.32 2.51 1843 | 5 0.05 2.56 1871 | 15 0.15 2.71 1899 | 16 0.16 2.87 1928 | 15 0.15 3.02 1956 | 18 0.18 3.20 1985 | 15 0.15 3.35 2013 | 15 0.15 3.50 2041 | 17 0.17 3.67 2070 | 15 0.15 3.82 2098 | 20 0.20 4.02 2126 | 17 0.17 4.19 2155 | 24 0.24 4.43 2183 | 24 0.24 4.67 2211 | 17 0.17 4.84 2240 | 22 0.22 5.06 2268 | 110 1.10 6.16 2296 | 38 0.38 6.54 2325 | 43 0.43 6.97 2353 | 58 0.58 7.55 2381 | 65 0.65 8.20 2410 | 67 0.67 8.87 2438 | 60 0.60 9.47 2466 | 64 0.64 10.11 2495 | 69 0.69 10.80 2523 | 60 0.60 11.40 2552 | 104 1.04 12.44 2580 | 81 0.81 13.25 2608 | 93 0.93 14.18 2637 | 86 0.86 15.04 2665 | 107 1.07 16.11 2693 | 83 0.83 16.94 2722 | 391 3.91 20.85 2750 | 146 1.46 22.31 2778 | 186 1.86 24.17 2807 | 162 1.62 25.79 2835 | 198 1.98 27.77 2863 | 187 1.87 29.64 2892 | 151 1.51 31.15 2920 | 202 2.02 33.17 2948 | 247 2.47 35.64 2977 | 193 1.93 37.57 3005 | 230 2.30 39.87 3033 | 207 2.07 41.94 3062 | 226 2.26 44.20 3090 | 218 2.18 46.38 3119 | 197 1.97 48.35 3147 | 176 1.76 50.11 3175 | 480 4.80 54.91 3204 | 223 2.23 57.14 3232 | 226 2.26 59.40 3260 | 216 2.16 61.56 3289 | 259 2.59 64.15 3317 | 229 2.29 66.44 3345 | 210 2.10 68.54 3374 | 170 1.70 70.24 3402 | 235 2.35 72.59 3430 | 202 2.02 74.61 3459 | 174 1.74 76.35 3487 | 166 1.66 78.01 3515 | 174 1.74 79.75 3544 | 144 1.44 81.19 3572 | 144 1.44 82.63 3600 | 112 1.12 83.75 3629 | 224 2.24 85.99 3657 | 109 1.09 87.08 3686 | 119 1.19 88.27 3714 | 98 0.98 89.25 3742 | 129 1.29 90.54 3771 | 80 0.80 91.34 3799 | 76 0.76 92.10 3827 | 63 0.63 92.73 3856 | 77 0.77 93.50 3884 | 79 0.79 94.29 3912 | 57 0.57 94.86 3941 | 43 0.43 95.29 3969 | 52 0.52 95.81 3997 | 40 0.40 96.21 4026 | 32 0.32 96.53 4054 | 30 0.30 96.83 4082 | 56 0.56 97.39 4111 | 22 0.22 97.61 4139 | 38 0.38 97.99 4167 | 25 0.25 98.24 4196 | 25 0.25 98.49 4224 | 22 0.22 98.71 4253 | 18 0.18 98.89 4281 | 9 0.09 98.98 4309 | 13 0.13 99.11 4338 | 11 0.11 99.22 4366 | 8 0.08 99.30 4394 | 6 0.06 99.36 4423 | 9 0.09 99.45 4451 | 2 0.02 99.47 4479 | 5 0.05 99.52 4508 | 4 0.04 99.56 4536 | 10 0.10 99.66 4564 | 4 0.04 99.70 4593 | 5 0.05 99.75 4621 | 4 0.04 99.79 4649 | 2 0.02 99.81 4678 | 1 0.01 99.82 4706 | 5 0.05 99.87 4763 | 1 0.01 99.88 4791 | 1 0.01 99.89 4848 | 1 0.01 99.90 4876 | 2 0.02 99.92 4905 | 2 0.02 99.94 4990 | 2 0.02 99.96 5075 | 1 0.01 99.97 5103 | 1 0.01 99.98 5415 | 1 0.01 99.99 5897 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015