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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:04:21                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              092/Gregg                                                 VRSN:      W
                                                        092-908/White Oak ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               34,194,030        0.9142            37,403,227               16              497
           2           A               34,241,936        0.9570            35,780,497               14              347
           3           A               34,279,594        0.9161            37,419,053               16              281
           4           A               34,220,874        0.9709            35,246,549               28              177
           5           D3              13,504,420        1.0193            13,248,720               15              663
           6           G1              55,735,170        0.9941            56,065,959               22              294
  RANDOM TOTALS:                      206,176,024                         215,164,005              111            2,259
  CATG D1 EXCEPTION VALUES:               524,350                             475,967
 TOTAL TEST VALUES (4):               206,700,374                         215,639,972
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                10,781,999
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 204,857,973 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  206,700,374 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 226,421,971 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  231,607,500 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES