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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:00:21                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              036/Chambers                                              VRSN:      W
                                                        036-902/Barbers Hill ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              121,481,219        0.9653           125,848,150              25            1,109         .021530491
      2           A              121,561,083        0.9536           127,475,968              33              699         .013807135
      3           A              121,462,612        0.9960           121,950,414              40              560         .010793657
      4           A              121,252,166        0.9616           126,094,183              18              365         .005244757
      5           D3              38,330,670        0.9150            41,891,443              27            1,883         .034808697
      6           F1              12,279,781        0.9929            12,367,591               6               69         .001917483
      7           F1              12,164,226        0.9758            12,465,901               5               22         .032236502
      8           F1              12,796,737        0.8091            15,816,014               7               11         .047876441
      9           F1              11,222,577        1.0558            10,629,453               2                3         .010804539
     10           G1              12,876,788        1.0844            11,874,574               5               19         .011005903
     11           G1              15,037,513        0.9763            15,402,554               3                4         .001149807
  RANDOM TOTALS:                 600,465,372                         621,816,245             171            4,744
  CATG J  EXCEPTION VALUES:       27,976,880                          28,186,435
  CATG D1 EXCEPTION VALUES:        3,352,460                           3,032,058
  CATG G1 EXCEPTION VALUES:       20,654,256                          21,130,901
 TOTAL TEST VALUES (4):          652,448,968                         674,165,639
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           33,708,282
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            640,457,357 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             652,448,968 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            707,873,921 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           2,351,551,353 (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