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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:13:38                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              158/Matagorda                                             VRSN:      P
                                                        158-906/Van Vleck ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               35,320,357        0.8584            41,146,735               16            1,164
           2           A               35,329,094        0.8240            42,875,114               23              598
           3           A               35,401,669        0.8445            41,920,271               15              400
           4           A               35,231,271        0.9280            37,964,732               15              238
           5           C                5,247,909        0.9827             5,340,296               14            2,414
           6           C                5,140,947        0.9888             5,199,178               26              754
           7           C                9,313,453        0.9386             9,922,707                8              497
           8           C                1,071,059        1.0127             1,057,627               16               35
           9           D3              22,191,501        0.9017            24,610,736               20            2,974
          10           G1              30,535,364        1.0180            29,995,446               13               63
  RANDOM TOTALS:                      214,782,624                         240,032,842              166            9,137
  CATG J  EXCEPTION VALUES:            14,198,926                          13,263,760
  CATG D1 EXCEPTION VALUES:            16,790,847                          15,549,296
 TOTAL TEST VALUES (4):               245,772,397                         268,845,898
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                13,442,295
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  245,772,397 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 255,403,603 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 282,288,193 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  256,489,161 (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