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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:52:57                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              015/Bexar                                                 VRSN:      P
                                                        015-909/Somerset ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               34,786,920        0.8666            40,141,842               16            1,001
           2           A               34,922,496        0.8659            40,330,865               16              594
           3           A               34,677,330        0.9199            37,696,847               17              421
           4           A               34,775,982        0.8712            39,917,335               17              263
           5           C                4,701,354        0.9829             4,783,146                9              653
           6           C                4,694,726        1.1021             4,259,800               19              282
           7           C                4,684,371        1.0488             4,466,410                9              192
           8           C                4,687,849        0.9803             4,782,055                7              118
           9           D3              37,100,765        0.8034            46,179,693               23            1,961
  RANDOM TOTALS:                      195,031,793                         222,557,993              133            5,485
  CATG D1 EXCEPTION VALUES:             2,321,602                           3,159,002
 TOTAL TEST VALUES (4):               197,353,395                         225,716,995
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                11,285,850
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  197,353,395 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 214,431,145 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 237,002,845 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  214,510,950 (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