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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:14:55                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              163/Medina                                                VRSN:      W
                                                        163-903/Natalia ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               10,499,727        0.9305            11,283,962                7              394
           2           A               10,530,978        0.9468            11,122,706                7              229
           3           A               10,549,347        0.9292            11,353,150                8              151
           4           A               10,446,919        0.9887            10,566,318                7               82
           5           C                2,127,352        0.9949             2,138,257                7              163
           6           C                2,080,887        1.0846             1,918,576                8               80
           7           C                2,076,877        0.9668             2,148,197                7               63
           8           C                2,091,501        0.9646             2,168,257                7               50
           9           D3              36,325,580        1.0045            36,162,847               21            2,023
  RANDOM TOTALS:                       86,729,168                          88,862,270               79            3,235
  CATG D1 EXCEPTION VALUES:             2,574,540                           2,697,552
 TOTAL TEST VALUES (4):                89,303,708                          91,559,822
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 4,577,991
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  86,981,831 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   89,303,708 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  96,137,813 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   89,270,095 (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