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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:40                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              158/Matagorda                                             VRSN:      W
                                                        158-906/Van Vleck ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               42,499,700        0.8225            51,671,368              18            1,156         .112650945
      2           A               42,523,072        0.8043            52,869,666              16              601         .480400590
      3           A               42,504,366        0.9552            44,497,871              15              407         .017025648
      4           A               42,407,579        0.9108            46,560,803              18              245         .022552752
      5           C                7,959,315        0.6234            12,767,589              10            2,611         .087686562
      6           C                4,794,589        0.5958             8,047,313              16              538         .377859159
      7           C               10,861,339        0.5638            19,264,525              19              488        1.008892208
      8           C                1,218,759        0.7246             1,681,975               5               17         .298286576
      9           D3              24,842,339        0.6001            41,396,999              15            3,006        1.282988918
     10           G1              11,154,660        0.3761            29,658,761               5               14        1.888016296
     11           G1              10,722,320        1.0620            10,096,347               3                5         .022966687
     12           G1              11,155,500        0.9981            11,176,736               2                3         .000464008
  RANDOM TOTALS:                 252,643,538                         329,689,953             142            9,091
  CATG J  EXCEPTION VALUES:       13,542,279                          13,596,862
  CATG D1 EXCEPTION VALUES:       16,593,730                          16,518,183
  CATG G1 EXCEPTION VALUES:       25,331,833                          25,029,183
 TOTAL TEST VALUES (4):          308,111,380                         384,834,181
 MARGIN OF ERROR PERCENT:         11.2101685
 MARGIN OF ERROR VALUE:           43,140,560
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             308,111,380 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            341,693,621 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            427,974,741 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             325,459,943 (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