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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:16:58                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              180/Oldham                                                VRSN:      P
                                                        180-902/Vega ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               17,559,554        0.9764            17,983,976               21              396
           2           D3               8,238,326        0.9828             8,382,505               20              923
           3           F1               4,817,450        0.9426             5,110,811               20              105
           4           L1               2,386,428        0.9829             2,427,946               12              134
  RANDOM TOTALS:                       33,001,758                          33,905,238               73            1,558
  CATG J  EXCEPTION VALUES:             1,252,132                           1,180,974
  CATG D1 EXCEPTION VALUES:            18,280,780                          14,855,081
 TOTAL TEST VALUES (4):                52,534,670                          49,941,293
 MARGIN OF ERROR PERCENT:               5.0000007
 MARGIN OF ERROR VALUE:                 2,497,065
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  47,444,228 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                  52,438,358 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   52,534,670 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):                   63,080,405 (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