dataset 1       dataset 2
       528.00          556.00
       406.00          380.00
       257.00          277.00
       230.00          193.00
       163.00          151.00
       110.00           96.00
        70.00           98.00
        64.00           66.00
        57.00           47.00
        27.00           33.00

      chi-squared:      13.2378
      probability:       0.2107