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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:01                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              234/Van Zandt                                             VRSN:      W
                                                        234-906/Van ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               39,839,341        0.8659            46,009,171               16            1,073
           2           A               39,931,065        0.8948            44,625,687               17              669
           3           A               39,805,066        0.9392            42,381,885               17              468
           4           A               39,869,543        0.9926            40,166,777               16              295
           5           D3             167,009,270        0.9690           172,352,188               46           19,936
           6           G1              32,537,074        1.0162            32,018,376               18              200
  RANDOM TOTALS:                      358,991,359                         377,554,084              130           22,641
  CATG D1 EXCEPTION VALUES:            13,191,242                           8,998,840
  CATG G1 EXCEPTION VALUES:             9,723,626                           9,894,270
 TOTAL TEST VALUES (4):               381,906,227                         396,447,194
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                19,822,360
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 376,624,834 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  381,906,227 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 416,269,554 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  380,276,943 (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