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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:37:21                                       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               75,250,934        0.8724            86,257,375              64            2,824         .043453974
      2           A               75,386,287        0.8574            87,924,291              64            1,357         .019103534
      3           A               75,109,506        0.8974            83,696,797              60              858         .016651635
      4           A               75,240,997        0.8767            85,822,969              36              460         .017650695
      5           D3              33,258,662        1.0457            31,805,166              30            1,601         .040298887
      6           F1              32,259,809        0.9760            33,053,083               6              357         .006410797
      7           F1              32,214,038        0.9494            33,930,944               7              102         .007856750
      8           F1              32,479,256        1.0185            31,889,304               8               27         .038435500
      9           L1              20,976,458        1.0009            20,957,596               7              380         .001064090
     10           L1              20,844,718        0.9783            21,307,082              11               87         .002267538
     11           L1              20,906,914        0.9876            21,169,415               9               30         .000538133
  RANDOM TOTALS:                 493,927,579                         537,814,022             302            8,083
  CATG J  EXCEPTION VALUES:       36,061,999                          36,458,923
  CATG D1 EXCEPTION VALUES:        4,927,553                           4,718,104
  CATG F1 EXCEPTION VALUES:       32,896,190                          33,937,947
  CATG L1 EXCEPTION VALUES:       21,624,250                          21,186,954
 TOTAL TEST VALUES (4):          589,437,571                         634,115,950
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           31,705,798
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             589,437,571 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            602,410,152 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            665,821,748 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             829,803,504 (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