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DATE: 01/30/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 08:11:09                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              228/Trinity                                               VRSN:      W
                                                        228-903/Trinity ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               32,434,802        0.8707            37,251,409              20            1,573         .126566805
      2           A               32,463,749        0.9177            35,375,121              20              732         .068751981
      3           A               32,453,982        0.8332            38,951,011              16              407         .030726237
      4           A               32,352,321        0.8705            37,165,217              19              224         .015752071
      5           C               10,313,605        1.0250            10,062,054              19            3,763         .134556188
      6           C                3,470,936        1.1740             2,956,504              12              957         .044663556
      7           C                6,202,688        1.4267             4,347,577              14            1,203         .085001058
      8           C                6,647,840        0.8938             7,437,727              12              589         .053137318
      9           D3              20,229,933        0.9151            22,106,800              21            2,164         .046735668
     10           F1               4,265,286        1.1365             3,753,001               7              115         .015450880
     11           F1               4,218,399        1.0078             4,185,750              10               40         .053054442
     12           F1               4,606,698        0.9015             5,110,037               8               17         .035349951
     13           F1               3,867,428        0.8713             4,438,687               5                6         .021939456
     14           L1               3,077,087        0.8784             3,503,059               7              113         .099845760
     15           L1               3,094,304        1.0622             2,913,109               7               19         .109915223
     16           L1               3,166,756        1.0788             2,935,443               3                6         .041701721
  RANDOM TOTALS:                 202,865,814                         222,492,506             200           11,928
  CATG J  EXCEPTION VALUES:        8,036,863                           7,912,336
  CATG D1 EXCEPTION VALUES:       14,588,745                          13,711,825
  CATG L1 EXCEPTION VALUES:        2,922,189                           2,812,276
 TOTAL TEST VALUES (4):          228,413,611                         246,928,943
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           12,346,447
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             228,413,611 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            234,582,496 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            259,275,390 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             200,344,924 (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