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DATE: 01/30/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 08:09:51                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              020/Brazoria                                              VRSN:      W
                                                        020-910/Damon ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                3,118,438        0.9324             3,344,528              16              153         .034320683
      2           A                3,086,085        1.0099             3,055,832              15               85         .008637829
      3           A                3,139,448        0.9292             3,378,657              15               59         .033431880
      4           A                3,060,549        0.9696             3,156,507              16               33         .018256763
      5           D3               5,859,560        0.9291             6,306,705              21              912         .021161605
  RANDOM TOTALS:                  18,264,080                          19,242,229              83            1,242
  CATG J  EXCEPTION VALUES:        6,728,592                           7,467,955
  CATG D1 EXCEPTION VALUES:        3,863,660                           3,796,082
 TOTAL TEST VALUES (4):           28,856,332                          30,506,266
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            1,525,313
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              28,856,332 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             28,980,953 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             32,031,579 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              33,533,816 (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