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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:18:24                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              189/Presidio                                              VRSN:      P
                                                        189-902/Presidio ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                8,353,324        0.9880             8,454,781               15              507
           2           A                8,427,457        0.9589             8,788,671               15              307
           3           A                8,331,743        0.9706             8,584,116               15              213
           4           A                8,339,052        0.8890             9,380,261               15              127
           5           C                1,252,702        0.9665             1,296,122               12            1,183
           6           C                1,212,761        0.8685             1,396,386               11              388
           7           C                1,187,630        0.9399             1,263,571               10              208
           8           C                1,214,251        0.9231             1,315,406               10               80
           9           D3              11,060,353        0.9689            11,415,371               20            2,878
          10           F1               2,204,454        0.8911             2,473,857               10               82
          11           F1               2,187,336        0.9564             2,287,051                9               39
          12           F1               2,237,060        0.8510             2,628,743                7               15
          13           F1               2,141,215        0.9516             2,250,121                4                5
          14           L1               1,190,126        0.9552             1,245,944                7               48
          15           L1               1,166,706        0.9557             1,220,787                5               14
          16           L1               1,251,321        1.0115             1,237,094                4                8
  RANDOM TOTALS:                       61,757,491                          65,238,282              169            6,102
  CATG J  EXCEPTION VALUES:             1,987,400                           1,986,556
  CATG D1 EXCEPTION VALUES:             3,163,890                           3,551,404
  CATG F1 EXCEPTION VALUES:             2,356,310                           2,056,652
  CATG L1 EXCEPTION VALUES:             1,017,520                           1,005,485
 TOTAL TEST VALUES (4):                70,282,611                          73,838,379
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                 3,691,919
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  70,146,460 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   70,282,611 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  77,530,298 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   71,431,916 (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