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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:56:35                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              036/Chambers                                              VRSN:      W
                                                        036-903/East Chambers ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               23,289,361        0.9469            24,595,375               11              579
           2           A               23,277,076        0.9389            24,791,859               10              305
           3           A               23,280,431        0.9749            23,879,814               10              215
           4           A               23,268,712        0.9771            23,814,054               10              137
           5           D3              25,580,510        0.7982            32,047,745               14            2,049
           6           F1               7,193,063        1.0054             7,154,429                7               92
           7           F1               7,580,446        0.9915             7,645,432                6               23
           8           F1               7,198,758        0.8529             8,440,331                4                7
           9           G1              25,504,167        1.0201            25,001,634               11               45
  RANDOM TOTALS:                      166,172,524                         177,370,673               83            3,452
  CATG J  EXCEPTION VALUES:             6,475,573                           6,647,508
  CATG D1 EXCEPTION VALUES:             8,785,698                           7,555,764
  CATG F1 EXCEPTION VALUES:             6,631,290                           6,218,167
  CATG G1 EXCEPTION VALUES:            42,570,729                          44,729,553
 TOTAL TEST VALUES (4):               230,635,814                         242,521,665
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                12,126,083
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 230,395,582 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  230,635,814 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 254,647,748 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  246,274,452 (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