Frequencies for ai variable in dapstate2014 dataset :

                ai |      Freq.     Percent        Cum.
-------------------+-----------------------------------
   .82076677493751 |          1        1.92        1.92
  .835615733638406 |          1        1.92        3.85
  .848669927567244 |          1        1.92        5.77
  .854928040876985 |          1        1.92        7.69
 .8551454544067379 |          1        1.92        9.62
  .863931147381663 |          1        1.92       11.54
  .867827076464891 |          1        1.92       13.46
  .870733866468072 |          1        1.92       15.38
  .886521950364113 |          1        1.92       17.31
 .8986539486795661 |          1        1.92       19.23
 .9014066606760029 |          1        1.92       21.15
  .920222589746118 |          1        1.92       23.08
  .932088663801551 |          1        1.92       25.00
  .934729348868132 |          1        1.92       26.92
  .941273055970669 |          1        1.92       28.85
  .942233681678772 |          1        1.92       30.77
   .94338670372963 |          1        1.92       32.69
  .947270466014743 |          1        1.92       34.62
  .948575925081968 |          1        1.92       36.54
  .951391894370317 |          1        1.92       38.46
  .957419356331229 |          1        1.92       40.38
  .962699986994267 |          1        1.92       42.31
  .962796961888671 |          1        1.92       44.23
  .989666949957609 |          1        1.92       46.15
  .991517318412662 |          1        1.92       48.08
  .993895936757326 |          1        1.92       50.00
  .994591370224953 |          1        1.92       51.92
                 1 |          1        1.92       53.85
  1.00240380689502 |          1        1.92       55.77
  1.00674785673618 |          1        1.92       57.69
  1.00676402449608 |          1        1.92       59.62
  1.00747794285417 |          1        1.92       61.54
  1.00952558219433 |          1        1.92       63.46
  1.01066133007407 |          1        1.92       65.38
  1.02417900040746 |          1        1.92       67.31
  1.02928813919425 |          1        1.92       69.23
  1.03281373158097 |          1        1.92       71.15
  1.04734508320689 |          1        1.92       73.08
  1.06392858922482 |          1        1.92       75.00
  1.07356865331531 |          1        1.92       76.92
   1.0798026882112 |          1        1.92       78.85
  1.08224155381322 |          1        1.92       80.77
  1.09535023197532 |          1        1.92       82.69
  1.10680665820837 |          1        1.92       84.62
  1.11064102873206 |          1        1.92       86.54
  1.11117379367352 |          1        1.92       88.46
  1.11471612751484 |          1        1.92       90.38
  1.11526632681489 |          1        1.92       92.31
   1.1346411369741 |          1        1.92       94.23
  1.13503788784146 |          1        1.92       96.15
  1.14049742370844 |          1        1.92       98.08
   1.1752451620996 |          1        1.92      100.00
-------------------+-----------------------------------
             Total |         52      100.00

by Jean Roth , jroth@nber.org , 18 Oct 2016