Frequencies for first 10,000 rows of dbirwt variable in natlterr1999 dataset : Birthweight | Freq. Percent Cum. ------------+----------------------------------- 284 | 1 0.01 0.01 312 | 1 0.01 0.02 397 | 1 0.01 0.03 425 | 1 0.01 0.04 454 | 6 0.06 0.10 510 | 1 0.01 0.11 539 | 1 0.01 0.12 567 | 6 0.06 0.18 595 | 3 0.03 0.21 652 | 1 0.01 0.22 680 | 3 0.03 0.25 709 | 5 0.05 0.30 737 | 4 0.04 0.34 765 | 3 0.03 0.37 822 | 2 0.02 0.39 851 | 3 0.03 0.42 879 | 2 0.02 0.44 907 | 7 0.07 0.51 964 | 4 0.04 0.55 992 | 3 0.03 0.58 1021 | 2 0.02 0.60 1049 | 5 0.05 0.65 1077 | 2 0.02 0.67 1106 | 1 0.01 0.68 1134 | 6 0.06 0.74 1162 | 5 0.05 0.79 1191 | 2 0.02 0.81 1247 | 1 0.01 0.82 1276 | 5 0.05 0.87 1304 | 2 0.02 0.89 1332 | 4 0.04 0.93 1361 | 11 0.11 1.04 1389 | 7 0.07 1.11 1418 | 3 0.03 1.14 1446 | 4 0.04 1.18 1474 | 4 0.04 1.22 1503 | 2 0.02 1.24 1531 | 5 0.05 1.29 1559 | 5 0.05 1.34 1588 | 5 0.05 1.39 1616 | 12 0.12 1.51 1644 | 8 0.08 1.59 1673 | 7 0.07 1.66 1701 | 7 0.07 1.73 1729 | 8 0.08 1.81 1758 | 4 0.04 1.85 1786 | 6 0.06 1.91 1814 | 25 0.25 2.16 1843 | 12 0.12 2.28 1871 | 11 0.11 2.39 1899 | 18 0.18 2.57 1928 | 15 0.15 2.72 1956 | 12 0.12 2.84 1985 | 15 0.15 2.99 2013 | 17 0.17 3.16 2041 | 21 0.21 3.37 2070 | 11 0.11 3.48 2098 | 19 0.19 3.67 2126 | 28 0.28 3.95 2155 | 24 0.24 4.19 2183 | 30 0.30 4.49 2211 | 23 0.23 4.72 2240 | 30 0.30 5.02 2268 | 77 0.77 5.79 2296 | 37 0.37 6.16 2325 | 46 0.46 6.62 2353 | 47 0.47 7.09 2381 | 58 0.58 7.67 2410 | 66 0.66 8.33 2438 | 67 0.67 9.00 2466 | 76 0.76 9.76 2495 | 81 0.81 10.57 2523 | 72 0.72 11.29 2552 | 90 0.90 12.19 2580 | 90 0.90 13.09 2608 | 105 1.05 14.14 2637 | 104 1.04 15.18 2665 | 107 1.07 16.25 2693 | 97 0.97 17.22 2722 | 317 3.17 20.39 2750 | 154 1.54 21.93 2778 | 175 1.75 23.68 2807 | 173 1.73 25.41 2835 | 216 2.16 27.57 2863 | 193 1.93 29.50 2892 | 201 2.01 31.51 2920 | 212 2.12 33.63 2948 | 228 2.28 35.91 2977 | 226 2.26 38.17 3005 | 233 2.33 40.50 3033 | 201 2.01 42.51 3062 | 226 2.26 44.77 3090 | 238 2.38 47.15 3119 | 223 2.23 49.38 3147 | 190 1.90 51.28 3175 | 398 3.98 55.26 3204 | 187 1.87 57.13 3232 | 231 2.31 59.44 3260 | 244 2.44 61.88 3289 | 235 2.35 64.23 3317 | 217 2.17 66.40 3345 | 213 2.13 68.53 3374 | 223 2.23 70.76 3402 | 242 2.42 73.18 3430 | 176 1.76 74.94 3459 | 210 2.10 77.04 3487 | 149 1.49 78.53 3515 | 184 1.84 80.37 3544 | 166 1.66 82.03 3572 | 147 1.47 83.50 3600 | 100 1.00 84.50 3629 | 238 2.38 86.88 3657 | 89 0.89 87.77 3686 | 102 1.02 88.79 3714 | 102 1.02 89.81 3742 | 119 1.19 91.00 3771 | 74 0.74 91.74 3799 | 83 0.83 92.57 3827 | 75 0.75 93.32 3856 | 88 0.88 94.20 3884 | 53 0.53 94.73 3912 | 60 0.60 95.33 3941 | 52 0.52 95.85 3969 | 37 0.37 96.22 3997 | 45 0.45 96.67 4026 | 38 0.38 97.05 4054 | 22 0.22 97.27 4082 | 52 0.52 97.79 4111 | 27 0.27 98.06 4139 | 24 0.24 98.30 4167 | 23 0.23 98.53 4196 | 15 0.15 98.68 4224 | 15 0.15 98.83 4253 | 19 0.19 99.02 4281 | 12 0.12 99.14 4309 | 9 0.09 99.23 4338 | 14 0.14 99.37 4366 | 6 0.06 99.43 4394 | 3 0.03 99.46 4423 | 3 0.03 99.49 4451 | 8 0.08 99.57 4479 | 3 0.03 99.60 4508 | 2 0.02 99.62 4536 | 8 0.08 99.70 4593 | 2 0.02 99.72 4621 | 3 0.03 99.75 4649 | 2 0.02 99.77 4678 | 2 0.02 99.79 4706 | 1 0.01 99.80 4763 | 2 0.02 99.82 4820 | 2 0.02 99.84 4848 | 2 0.02 99.86 4876 | 1 0.01 99.87 4905 | 2 0.02 99.89 4990 | 2 0.02 99.91 5160 | 1 0.01 99.92 5868 | 1 0.01 99.93 5897 | 2 0.02 99.95 9999 | 5 0.05 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015