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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:18:09                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              184/Parker                                                VRSN:      W
                                                        184-909/Brock ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               15,272,818        0.9920            15,395,986               13              182
           2           A               15,301,905        1.0120            15,120,459               12               98
           3           A               15,286,116        0.9664            15,817,587               12               60
           4           A               15,046,496        0.9517            15,810,125                9               33
           5           D3              72,129,280        0.9619            74,986,256               26            2,151
  RANDOM TOTALS:                      133,036,615                         137,130,413               72            2,524
  CATG D1 EXCEPTION VALUES:             4,503,700                           3,380,420
 TOTAL TEST VALUES (4):               137,540,315                         140,510,833
 MARGIN OF ERROR PERCENT:               9.6467302
 MARGIN OF ERROR VALUE:                13,554,701
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 126,956,132 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  137,540,315 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 154,065,534 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  157,272,148 (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