Frequencies for summarystarratingstr variable in pdp2013 dataset :

         Summary Star Rating |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     2 Stars |         46        3.46        3.46
                   2.5 Stars |         71        5.35        8.81
                     3 Stars |        592       44.58       53.39
                   3.5 Stars |        417       31.40       84.79
                     4 Stars |        119        8.96       93.75
                   4.5 Stars |          8        0.60       94.35
                     5 Stars |         15        1.13       95.48
  Not enough data available  |          3        0.23       95.71
Plan too new to be measured  |         57        4.29      100.00
-----------------------------+-----------------------------------
                       Total |      1,328      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016