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DATE: 01/26/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:21:01                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              025/Brown                                                 VRSN:      W
                                                        025-902/Brownwood ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               75,273,381        0.8503            88,525,674              70            2,824         .043665836
      2           A               75,408,775        0.8487            88,852,097              64            1,357         .021210730
      3           A               75,131,911        0.8853            84,866,047              63              858         .020328279
      4           A               75,263,441        0.8674            86,769,012              37              460         .021327384
      5           D3              33,341,182        1.0051            33,172,005              30            1,600         .025244186
      6           F1              32,259,816        0.9542            33,808,233               7              357         .008823675
      7           F1              32,214,045        0.9473            34,006,170               7              102         .008191838
      8           F1              32,479,263        1.0185            31,889,311               8               27         .038435500
      9           L1              20,994,504        1.0009            20,975,626               7              380         .001064090
     10           L1              20,862,651        0.9783            21,325,412              11               87         .002267538
     11           L1              20,924,901        0.9876            21,187,628               9               30         .000538133
  RANDOM TOTALS:                 494,153,870                         545,377,215             313            8,082
  CATG J  EXCEPTION VALUES:       36,061,999                          37,926,578
  CATG D1 EXCEPTION VALUES:        4,927,973                           4,718,652
  CATG F1 EXCEPTION VALUES:       32,896,190                          33,937,947
  CATG L1 EXCEPTION VALUES:       21,624,250                          21,186,954
 TOTAL TEST VALUES (4):          589,664,282                         643,147,346
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           32,157,367
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             589,664,282 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            610,989,979 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            675,304,713 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             830,710,794 (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