Frequencies for ami8aip variable in hvbp_ami_05_28_2013 dataset :

     AMI-8a |
Improvement |
     Points |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        462       15.48       15.48
          1 |         38        1.27       16.76
          2 |         49        1.64       18.40
          3 |         42        1.41       19.81
          4 |         56        1.88       21.68
          5 |         76        2.55       24.23
          6 |         68        2.28       26.51
          7 |         80        2.68       29.19
          8 |         48        1.61       30.80
          9 |        315       10.56       41.35
          . |      1,750       58.65      100.00
------------+-----------------------------------
      Total |      2,984      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016