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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:20:37                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              208/Scurry                                                VRSN:      W
                                                        208-903/Ira ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                1,270,824        1.0188             1,247,373                7               49
           2           A                1,291,972        0.9779             1,321,170                6               26
           3           A                1,296,573        0.9586             1,352,569                6               19
           4           A                1,205,415        1.0009             1,204,331                5               12
           5           D3               5,585,820        1.0163             5,496,231               10              704
           6           G1              69,018,290        0.9908            69,659,154               19              275
  RANDOM TOTALS:                       79,668,894                          80,280,828               53            1,085
  CATG J  EXCEPTION VALUES:             3,278,948                           3,355,712
  CATG D1 EXCEPTION VALUES:             5,801,042                           6,325,323
 TOTAL TEST VALUES (4):                88,748,884                          89,961,863
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 4,498,093
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  85,463,770 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   88,748,884 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  94,459,956 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   94,991,055 (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