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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:07:26                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              109/Hill                                                  VRSN:      P
                                                        109-913/Blum ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                2,829,455        0.9899             2,858,324                9              107
           2           A                2,805,646        1.1263             2,491,029               10               62
           3           A                2,884,248        1.0770             2,678,039                9               44
           4           A                2,774,937        1.0553             2,629,524                9               30
           5           D3              24,983,180        0.8482            29,454,350               20            1,387
  RANDOM TOTALS:                       36,277,466                          40,111,266               57            1,630
  CATG J  EXCEPTION VALUES:             4,608,750                           4,732,646
  CATG D1 EXCEPTION VALUES:             5,958,256                           4,995,844
 TOTAL TEST VALUES (4):                46,844,472                          49,839,756
 MARGIN OF ERROR PERCENT:               5.6111170
 MARGIN OF ERROR VALUE:                 2,796,567
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                   46,844,472 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                  47,043,189 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                  52,636,323 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   47,163,548 (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