Source:lec25p11.sas  C:\ed\web\be691f\webready  12/3/98  EJS
Table 11.2.  Summary of sample sizes

                       Stratum

                               Cumulative  Cumulative
STRATUM   Frequency   Percent   Frequency    Percent
-----------------------------------------------------
      1          8      12.5           8       12.5
      2         15      23.4          23       35.9
      3          8      12.5          31       48.4
      4          9      14.1          40       62.5
      5         20      31.3          60       93.8
      6          4       6.3          64      100.0