Frequencies for first 10,000 rows of dlfd variable in natl1977 dataset : Detail | Interval | Since Last | Fetal Death | Freq. Percent Cum. ------------+----------------------------------- 4 | 2 0.02 0.02 6 | 1 0.01 0.03 7 | 2 0.02 0.05 8 | 4 0.04 0.09 9 | 6 0.06 0.15 10 | 36 0.36 0.51 11 | 35 0.35 0.86 12 | 40 0.40 1.26 13 | 38 0.38 1.64 14 | 34 0.34 1.98 15 | 32 0.32 2.30 16 | 28 0.28 2.58 17 | 26 0.26 2.84 18 | 30 0.30 3.14 19 | 26 0.26 3.40 20 | 24 0.24 3.64 21 | 18 0.18 3.82 22 | 16 0.16 3.98 23 | 15 0.15 4.13 24 | 18 0.18 4.31 25 | 25 0.25 4.56 26 | 12 0.12 4.68 27 | 18 0.18 4.86 28 | 11 0.11 4.97 29 | 9 0.09 5.06 30 | 9 0.09 5.15 31 | 13 0.13 5.28 32 | 14 0.14 5.42 33 | 5 0.05 5.47 34 | 8 0.08 5.55 35 | 9 0.09 5.64 36 | 10 0.10 5.74 37 | 10 0.10 5.84 38 | 5 0.05 5.89 39 | 9 0.09 5.98 40 | 5 0.05 6.03 41 | 9 0.09 6.12 42 | 12 0.12 6.24 43 | 5 0.05 6.29 44 | 12 0.12 6.41 45 | 8 0.08 6.49 46 | 6 0.06 6.55 47 | 10 0.10 6.65 48 | 10 0.10 6.75 49 | 14 0.14 6.89 50 | 4 0.04 6.93 51 | 7 0.07 7.00 52 | 2 0.02 7.02 53 | 9 0.09 7.11 54 | 4 0.04 7.15 55 | 10 0.10 7.25 56 | 8 0.08 7.33 57 | 7 0.07 7.40 58 | 7 0.07 7.47 59 | 7 0.07 7.54 60 | 4 0.04 7.58 61 | 6 0.06 7.64 62 | 9 0.09 7.73 63 | 4 0.04 7.77 64 | 3 0.03 7.80 65 | 1 0.01 7.81 66 | 8 0.08 7.89 67 | 4 0.04 7.93 68 | 4 0.04 7.97 69 | 5 0.05 8.02 70 | 4 0.04 8.06 71 | 3 0.03 8.09 72 | 2 0.02 8.11 73 | 3 0.03 8.14 74 | 7 0.07 8.21 75 | 5 0.05 8.26 76 | 4 0.04 8.30 77 | 3 0.03 8.33 78 | 5 0.05 8.38 79 | 5 0.05 8.43 81 | 4 0.04 8.47 82 | 1 0.01 8.48 83 | 2 0.02 8.50 84 | 3 0.03 8.53 85 | 1 0.01 8.54 86 | 4 0.04 8.58 87 | 4 0.04 8.62 88 | 3 0.03 8.65 89 | 4 0.04 8.69 90 | 7 0.07 8.76 92 | 2 0.02 8.78 93 | 1 0.01 8.79 94 | 4 0.04 8.83 95 | 1 0.01 8.84 96 | 5 0.05 8.89 97 | 2 0.02 8.91 98 | 4 0.04 8.95 99 | 1 0.01 8.96 100 | 2 0.02 8.98 101 | 2 0.02 9.00 102 | 1 0.01 9.01 103 | 2 0.02 9.03 104 | 1 0.01 9.04 105 | 2 0.02 9.06 106 | 1 0.01 9.07 107 | 4 0.04 9.11 109 | 2 0.02 9.13 110 | 1 0.01 9.14 112 | 1 0.01 9.15 113 | 1 0.01 9.16 114 | 1 0.01 9.17 115 | 1 0.01 9.18 116 | 2 0.02 9.20 119 | 1 0.01 9.21 120 | 3 0.03 9.24 121 | 2 0.02 9.26 123 | 1 0.01 9.27 125 | 1 0.01 9.28 126 | 1 0.01 9.29 127 | 2 0.02 9.31 128 | 1 0.01 9.32 129 | 1 0.01 9.33 131 | 1 0.01 9.34 133 | 1 0.01 9.35 136 | 1 0.01 9.36 137 | 1 0.01 9.37 140 | 1 0.01 9.38 143 | 2 0.02 9.40 144 | 2 0.02 9.42 146 | 4 0.04 9.46 151 | 1 0.01 9.47 152 | 1 0.01 9.48 156 | 2 0.02 9.50 159 | 2 0.02 9.52 165 | 1 0.01 9.53 169 | 1 0.01 9.54 171 | 1 0.01 9.55 172 | 1 0.01 9.56 186 | 1 0.01 9.57 188 | 1 0.01 9.58 192 | 1 0.01 9.59 205 | 1 0.01 9.60 226 | 1 0.01 9.61 230 | 1 0.01 9.62 234 | 1 0.01 9.63 247 | 1 0.01 9.64 294 | 1 0.01 9.65 777 | 8,665 86.65 96.30 999 | 370 3.70 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016