Frequencies for first 10,000 rows of dlfd variable in natl1980 dataset : Detail | Interval | Since Last | Fetal Death | Freq. Percent Cum. ------------+----------------------------------- 0 | 2 0.02 0.02 3 | 2 0.02 0.04 6 | 1 0.01 0.05 7 | 1 0.01 0.06 8 | 3 0.03 0.09 9 | 14 0.14 0.23 10 | 21 0.21 0.44 11 | 36 0.36 0.80 12 | 44 0.44 1.24 13 | 44 0.44 1.68 14 | 41 0.41 2.09 15 | 39 0.39 2.48 16 | 28 0.28 2.76 17 | 24 0.24 3.00 18 | 26 0.26 3.26 19 | 17 0.17 3.43 20 | 15 0.15 3.58 21 | 28 0.28 3.86 22 | 20 0.20 4.06 23 | 18 0.18 4.24 24 | 25 0.25 4.49 25 | 17 0.17 4.66 26 | 13 0.13 4.79 27 | 14 0.14 4.93 28 | 13 0.13 5.06 29 | 13 0.13 5.19 30 | 17 0.17 5.36 31 | 17 0.17 5.53 32 | 10 0.10 5.63 33 | 14 0.14 5.77 34 | 8 0.08 5.85 35 | 21 0.21 6.06 36 | 17 0.17 6.23 37 | 11 0.11 6.34 38 | 16 0.16 6.50 39 | 7 0.07 6.57 40 | 8 0.08 6.65 41 | 9 0.09 6.74 42 | 14 0.14 6.88 43 | 12 0.12 7.00 44 | 7 0.07 7.07 45 | 10 0.10 7.17 46 | 12 0.12 7.29 47 | 4 0.04 7.33 48 | 14 0.14 7.47 49 | 6 0.06 7.53 50 | 6 0.06 7.59 51 | 8 0.08 7.67 52 | 6 0.06 7.73 53 | 8 0.08 7.81 54 | 10 0.10 7.91 55 | 4 0.04 7.95 56 | 6 0.06 8.01 57 | 9 0.09 8.10 58 | 4 0.04 8.14 59 | 11 0.11 8.25 60 | 5 0.05 8.30 61 | 5 0.05 8.35 62 | 6 0.06 8.41 63 | 7 0.07 8.48 64 | 3 0.03 8.51 65 | 1 0.01 8.52 66 | 3 0.03 8.55 67 | 3 0.03 8.58 68 | 4 0.04 8.62 69 | 5 0.05 8.67 70 | 5 0.05 8.72 71 | 7 0.07 8.79 72 | 6 0.06 8.85 73 | 3 0.03 8.88 74 | 5 0.05 8.93 75 | 5 0.05 8.98 76 | 4 0.04 9.02 77 | 9 0.09 9.11 78 | 1 0.01 9.12 79 | 3 0.03 9.15 80 | 3 0.03 9.18 81 | 5 0.05 9.23 82 | 1 0.01 9.24 84 | 1 0.01 9.25 85 | 1 0.01 9.26 86 | 4 0.04 9.30 87 | 1 0.01 9.31 88 | 1 0.01 9.32 89 | 3 0.03 9.35 90 | 5 0.05 9.40 91 | 5 0.05 9.45 92 | 1 0.01 9.46 93 | 4 0.04 9.50 94 | 7 0.07 9.57 95 | 6 0.06 9.63 96 | 1 0.01 9.64 97 | 2 0.02 9.66 98 | 4 0.04 9.70 99 | 1 0.01 9.71 100 | 1 0.01 9.72 101 | 1 0.01 9.73 102 | 2 0.02 9.75 103 | 3 0.03 9.78 104 | 4 0.04 9.82 106 | 1 0.01 9.83 108 | 2 0.02 9.85 109 | 3 0.03 9.88 110 | 1 0.01 9.89 111 | 2 0.02 9.91 113 | 1 0.01 9.92 114 | 6 0.06 9.98 115 | 4 0.04 10.02 116 | 3 0.03 10.05 117 | 2 0.02 10.07 118 | 4 0.04 10.11 121 | 1 0.01 10.12 122 | 1 0.01 10.13 123 | 1 0.01 10.14 125 | 2 0.02 10.16 127 | 2 0.02 10.18 130 | 1 0.01 10.19 131 | 1 0.01 10.20 132 | 2 0.02 10.22 140 | 2 0.02 10.24 143 | 1 0.01 10.25 147 | 2 0.02 10.27 150 | 1 0.01 10.28 152 | 1 0.01 10.29 157 | 2 0.02 10.31 158 | 3 0.03 10.34 161 | 1 0.01 10.35 164 | 1 0.01 10.36 165 | 1 0.01 10.37 168 | 1 0.01 10.38 174 | 1 0.01 10.39 175 | 1 0.01 10.40 197 | 1 0.01 10.41 199 | 1 0.01 10.42 205 | 1 0.01 10.43 216 | 1 0.01 10.44 217 | 1 0.01 10.45 229 | 1 0.01 10.46 233 | 1 0.01 10.47 243 | 2 0.02 10.49 248 | 1 0.01 10.50 260 | 1 0.01 10.51 267 | 1 0.01 10.52 275 | 1 0.01 10.53 777 | 8,435 84.35 94.88 999 | 512 5.12 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016