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DATE: 06/30/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 13:45:15                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              022/Brewster                                              VRSN:      W
                                                        022-901/Alpine ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               40,224,712        0.7133            56,392,418               12              918
           2           A               40,205,012        0.8764            45,875,185               14              509
           3           A               40,169,793        0.9846            40,798,083               16              343
           4           A               40,222,409        1.0668            37,703,795               15              215
           5           D3              23,605,509        1.0288            22,944,702               20            6,604
           6           F1               9,343,539        0.9743             9,590,002               20              117
           7           F1               9,499,119        0.8767            10,835,085               14               43
           8           F1              10,051,624        0.9375            10,721,732                7               11
           9           L1               4,094,621        0.7394             5,537,762                8              157
          10           L1               4,035,785        1.0109             3,992,269                7               32
          11           L1               4,586,072        1.1438             4,009,505                6               11
  RANDOM TOTALS:                      226,038,195                         248,400,538              139            8,960
  CATG J  EXCEPTION VALUES:            16,711,457                          16,887,047
  CATG D1 EXCEPTION VALUES:            15,169,752                          18,182,544
  CATG F1 EXCEPTION VALUES:             9,469,954                           8,807,857
  CATG L1 EXCEPTION VALUES:             3,258,486                           3,042,317
 TOTAL TEST VALUES (4):               270,647,844                         295,320,303
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                14,766,015
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  270,647,844 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 280,554,288 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 310,086,318 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  289,316,102 (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