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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:54:32                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              024/Brooks                                                VRSN:      P
                                                        024-901/Brooks Co ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               11,167,950        1.0005            11,162,369                7              778
           2           A               11,237,003        0.9453            11,887,235                8              421
           3           A               11,156,893        0.9628            11,587,965                8              237
           4           A               11,137,112        0.9484            11,743,054                8              138
           5           D3              18,736,040        0.9110            20,566,454               15            3,618
           6           G1             466,888,828        0.9947           469,376,524               16              165
  RANDOM TOTALS:                      530,323,826                         536,323,601               62            5,357
  CATG J  EXCEPTION VALUES:            22,866,682                          23,500,870
  CATG D1 EXCEPTION VALUES:            37,450,430                          39,827,943
 TOTAL TEST VALUES (4):               590,640,938                         599,652,414
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                29,982,621
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 569,669,793 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  590,640,938 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 629,635,035 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  686,423,688 (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