Frequencies for partbl2yearstests variable in dapstate2012 dataset :

      Tests |      Freq.     Percent        Cum.
------------+-----------------------------------
   307.9605 |          1        1.92        1.92
    410.225 |          1        1.92        3.85
   445.2633 |          1        1.92        5.77
     495.62 |          1        1.92        7.69
   535.5026 |          1        1.92        9.62
    536.575 |          1        1.92       11.54
   540.9671 |          1        1.92       13.46
   547.9987 |          1        1.92       15.38
   548.9469 |          1        1.92       17.31
   552.2643 |          1        1.92       19.23
   553.1491 |          1        1.92       21.15
   556.9769 |          1        1.92       23.08
   594.4358 |          1        1.92       25.00
   628.5612 |          1        1.92       26.92
   643.0671 |          1        1.92       28.85
   646.9899 |          1        1.92       30.77
   649.5675 |          1        1.92       32.69
   661.9905 |          1        1.92       34.62
   665.5342 |          1        1.92       36.54
   671.7377 |          1        1.92       38.46
   677.1527 |          1        1.92       40.38
   678.4461 |          1        1.92       42.31
   697.7225 |          1        1.92       44.23
   713.5683 |          1        1.92       46.15
   713.9253 |          1        1.92       48.08
   724.3665 |          1        1.92       50.00
   725.0244 |          1        1.92       51.92
   726.6832 |          1        1.92       53.85
   728.6206 |          1        1.92       55.77
   734.0056 |          1        1.92       57.69
   742.5866 |          1        1.92       59.62
   749.5063 |          1        1.92       61.54
   757.6451 |          1        1.92       63.46
   757.8984 |          1        1.92       65.38
   767.2301 |          1        1.92       67.31
   770.6611 |          1        1.92       69.23
   801.7417 |          1        1.92       71.15
   813.9769 |          1        1.92       73.08
   846.9437 |          1        1.92       75.00
    853.118 |          1        1.92       76.92
   853.3503 |          1        1.92       78.85
   857.5187 |          1        1.92       80.77
   876.8902 |          1        1.92       82.69
   877.5224 |          1        1.92       84.62
   893.1609 |          1        1.92       86.54
   1,005.19 |          1        1.92       88.46
   1,022.39 |          1        1.92       90.38
   1,030.89 |          1        1.92       92.31
   1,042.74 |          1        1.92       94.23
   1,132.45 |          1        1.92       96.15
   1,177.85 |          1        1.92       98.08
   1,323.13 |          1        1.92      100.00
------------+-----------------------------------
      Total |         52      100.00

by Jean Roth , jroth@nber.org , 14 Mar 2018