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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:40:48                                       2005 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   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               44,092,593        0.8852            49,810,882               9              947         .062160717
      2           A               44,082,746        0.9994            44,109,212               9              598         .030339227
      3           A               44,087,143        0.9207            47,884,374               9              423         .022968196
      4           A               43,954,561        1.0187            43,147,699              11              272         .014198233
      5           D3             189,800,060        1.0284           184,558,596              67            7,471         .133870232
      6           G1               8,565,372        1.1053             7,749,364               6               46         .029924721
      7           G1               8,850,857        1.0123             8,743,314               5               15         .006468322
      8           G1               9,898,151        0.9575            10,337,495               3                6         .005818948
  RANDOM TOTALS:                 393,331,483                         396,340,936             119            9,778
  CATG D1 EXCEPTION VALUES:       13,249,720                           9,138,647
  CATG G1 EXCEPTION VALUES:       18,987,089                          18,310,180
 TOTAL TEST VALUES (4):          425,568,292                         423,789,763
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           21,189,488
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            402,600,275 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             425,568,292 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            444,979,251 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             411,344,414 (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