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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:13:34                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              158/Matagorda                                             VRSN:      P
                                                        158-904/Matagorda ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               19,852,509        0.7860            25,257,645               15              403
           2           A               19,866,323        0.8080            24,587,033               17              225
           3           A               19,884,428        0.8075            24,624,679               15              151
           4           A               19,737,922        0.8179            24,132,439               15               87
           5           C                2,841,990        0.7790             3,648,254               14              445
           6           C                2,600,884        0.7389             3,519,940               13              105
           7           C                2,547,157        0.9888             2,576,008               12               56
           8           C                2,634,224        0.9671             2,723,838               10               32
           9           D3               4,648,633        0.8939             5,200,395               10              949
  RANDOM TOTALS:                       94,614,070                         116,270,231              121            2,453
  CATG D1 EXCEPTION VALUES:             2,649,325                           2,511,725
 TOTAL TEST VALUES (4):                97,263,395                         118,781,956
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                 5,939,098
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                   97,263,395 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 112,842,858 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 124,721,054 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  129,105,824 (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