Summary statistics for natl1976 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 2,463,852 6 0 6 6 shipnum | 0 reparea | 0 rectype | 2,463,852 1.226323 .4184506 1 2 restatus | 2,463,852 1.258986 .5136312 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 2,463,852 4.878179 2.307896 0 9 stsubres | 2,463,852 52.27095 23.42389 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 2,463,852 4.904917 2.292394 1 9 stsubocc | 2,463,852 52.54552 23.24713 11 95 csex | 2,463,852 1.487375 .4998407 1 2 birattnd | 2,463,852 1.029394 .2627724 1 4 frace | 2,463,852 1.987328 2.445255 0 9 -------------+--------------------------------------------------------- mrace | 2,463,852 1.257216 .7957679 0 9 crace | 2,463,852 1.259335 .7605743 0 8 crace3 | 2,463,852 1.351721 .7460432 1 3 dmage | 2,463,852 24.53356 5.289299 10 49 mage36 | 2,463,852 11.53444 5.287436 1 36 -------------+--------------------------------------------------------- mage15 | 2,463,852 11.65336 3.437285 1 17 mage12 | 2,463,852 8.249078 1.607694 1 13 mage8 | 2,463,852 3.50066 1.091075 1 8 mage7 | 2,463,852 3.500206 1.089412 1 7 mage6 | 2,463,852 2.504085 1.082259 1 6 -------------+--------------------------------------------------------- nlbnl | 2,463,852 2.35016 9.403463 0 99 nlbnd | 2,463,852 3.85093 15.24518 0 99 nlbd | 2,463,852 3.095219 13.8286 0 99 dtotord | 2,463,852 3.188775 9.731316 1 99 totord9 | 2,463,852 2.272118 1.581766 1 9 -------------+--------------------------------------------------------- dlivord | 2,463,852 2.999875 9.600586 1 99 livord9 | 2,463,852 2.113966 1.465858 1 9 livord8 | 2,463,852 2.08898 1.368323 1 8 livord7 | 2,463,852 2.070365 1.299361 1 7 livord6 | 2,463,852 2.033426 1.189199 1 6 -------------+--------------------------------------------------------- livord3 | 2,463,852 1.590043 .5111706 1 3 dfage | 2,463,852 35.92492 23.48563 10 99 fage11 | 2,463,852 4.9248 2.490257 1 11 dbirwt | 2,463,852 3335.687 680.1415 227 9999 birwt12 | 2,463,852 7.148943 1.244754 1 12 -------------+--------------------------------------------------------- birwt3 | 2,463,852 1.929552 .2651387 1 3 dplural | 2,463,852 1.020004 .1428179 1 5 plural3 | 2,463,852 1.019981 .14239 1 3 plural2 | 2,463,852 1.019634 .13874 1 2 birmon | 2,463,852 6.634262 3.44001 1 12 -------------+--------------------------------------------------------- birday | 2,463,852 15.78729 8.817192 1 99 lmpmon | 2,463,852 25.5366 35.00401 1 99 lmpday | 2,463,852 43.01716 38.01838 1 99 lmpyr | 0 dgestat | 2,463,852 41.49811 29.83453 0 99 -------------+--------------------------------------------------------- gestat10 | 2,463,852 5.996166 3.361913 0 10 gestat3 | 2,463,852 1.711667 .9637242 0 3 dmeduc | 2,463,852 27.70029 30.99836 0 99 meduc14 | 2,463,852 6.726191 3.845548 0 14 meduc6 | 2,463,852 2.553617 1.575105 0 6 -------------+--------------------------------------------------------- dfeduc | 2,463,852 36.91111 36.82572 0 99 feduc14 | 2,463,852 7.713842 4.556088 0 14 dlegit | 2,463,852 2.868898 2.9904 1 9 legit3 | 2,463,852 .863407 .5837456 0 2 monprec | 0 -------------+--------------------------------------------------------- mpre10 | 2,463,852 2.263149 2.177247 0 10 mpre6 | 2,463,852 1.865829 1.287573 0 6 llbmon | 2,463,852 49.0408 37.80113 1 99 llbyr | 2,463,852 77.75321 7.125614 34 99 disllb | 2,463,852 485.3385 392.0245 0 999 -------------+--------------------------------------------------------- isllb17 | 2,463,852 5.527291 6.714509 0 21 isllb10 | 2,463,852 2.851879 3.393786 0 10 isllb8 | 2,463,852 2.308537 2.710074 0 8 lfdmon | 2,463,852 74.96668 19.97964 1 99 lfdyr | 2,463,852 78.99624 5.477085 1 99 -------------+--------------------------------------------------------- dlfd | 2,463,852 754.7474 207.8008 0 999 dterm | 2,463,852 491.4061 400.4473 0 999 term9 | 2,463,852 2.918159 3.27871 0 9 outcome | 2,463,852 .6256236 .7484946 0 3 mplbir | 2,463,852 29.59498 15.93104 1 99 -------------+--------------------------------------------------------- nprevis | 2,463,852 33.41564 36.31659 0 99 legitstrflg | 2,463,852 .7470696 .4346915 0 1 educstrflg | 2,463,852 .8138171 .3892542 0 1 lmprflg | 2,463,852 .8003549 .3997337 0 1 monprerflg | 2,463,852 .9211012 .2695808 0 1 -------------+--------------------------------------------------------- llbrflg | 2,463,852 .8058686 .3955306 0 1 lfdrflg | 2,463,852 .8058686 .3955306 0 1 legitsmsar~g | 2,463,852 .4363663 .4959343 0 1 educsmsarflg | 2,463,852 .4945557 .4999705 0 1 congenrflg | 2,463,852 .9123466 .2827902 0 1 -------------+--------------------------------------------------------- nprevisrflg | 2,463,852 .7412065 .4379721 0 1 injuryrflg | 2,463,852 .748894 .4336495 0 1 legitstoflg | 2,463,852 .7519952 .4318547 0 1 educstoflg | 2,463,852 .814984 .3883106 0 1 lmpoflg | 2,463,852 .8020806 .3984311 0 1 -------------+--------------------------------------------------------- monpreoflg | 2,463,852 .9262391 .2613815 0 1 llboflg | 2,463,852 .8071154 .3945633 0 1 lfdoflg | 2,463,852 .8071154 .3945633 0 1 congenflg | 2,463,852 .9167068 .2763249 0 1 nprevisoflg | 2,463,852 .7437736 .4365484 0 1 -------------+--------------------------------------------------------- injuryoflg | 2,463,852 .751121 .4323636 0 1 attend | 2,463,852 1.100762 .80789 1 9 recwt | 2,463,852 1.289232 .4534058 1 2 nprev28 | 2,463,852 8.892641 6.854698 0 28 by Jean Roth , jroth@nber.org , 3 Jan 2016