Frequencies for summarystarratingstr variable in pdp2012 dataset :

                    Summary Star Rating |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                      2 |         77        4.80        4.80
                                    2.5 |        627       39.11       43.92
                                      3 |        606       37.80       81.72
                                    3.5 |        158        9.86       91.58
                                      4 |        111        6.92       98.50
                                    4.5 |          2        0.12       98.63
                                      5 |         16        1.00       99.63
Not enough data to calculate summary .. |          1        0.06       99.69
            Plan too new to be measured |          5        0.31      100.00
----------------------------------------+-----------------------------------
                                  Total |      1,603      100.00

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