Frequencies for pn6ip variable in hvbp_pn_10_28_2014 dataset :

         PN-6 |
  Improvement |
       Points |      Freq.     Percent        Cum.
--------------+-----------------------------------
           0  |      1,296       41.96       41.96
           1  |        129        4.18       46.13
           2  |        130        4.21       50.34
           3  |        146        4.73       55.07
           4  |        158        5.11       60.18
           5  |        189        6.12       66.30
           6  |        181        5.86       72.16
           7  |        149        4.82       76.98
           8  |        102        3.30       80.28
           9  |        408       13.21       93.49
Not Available |        201        6.51      100.00
--------------+-----------------------------------
        Total |      3,089      100.00

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