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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:22:01                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              220/Tarrant                                               VRSN:      W
                                                        220-917/Castleberry ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               86,458,403        0.9972            86,701,166               16            1,777
           2           A               86,158,807        1.0502            82,040,380               46            1,332
           3           A               86,337,524        1.0133            85,204,307               34            1,053
           4           A               86,175,495        1.0485            82,189,313               22              749
           5           F1              12,722,109        0.9808            12,971,155                7              132
           6           F1              12,699,552        0.8368            15,176,329                7               54
           7           F1              12,554,910        0.9456            13,277,189                8               25
           8           F1              12,558,717        0.9818            12,791,523                5               12
  RANDOM TOTALS:                      395,665,517                         390,351,362              145            5,134
  CATG D1 EXCEPTION VALUES:                 5,884                               5,884
 TOTAL TEST VALUES (4):               395,671,401                         390,357,246
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                19,517,862
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 370,839,384 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  395,671,401 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 409,875,108 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  357,291,740 (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