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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:32:43                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              003/Angelina                                              VRSN:      W
                                                        003-903/Lufkin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              917,837,548        0.9647           951,422,772              60           13,776         .010198092
      2           D3              16,066,610        0.8510            18,879,683              10            3,292         .018467530
      3           F1             332,964,162        0.9362           355,654,948              10            1,412         .034239910
      4           L1             238,635,638        0.9984           239,018,067              13            2,028         .008640789
  RANDOM TOTALS:               1,505,503,958                       1,564,975,470              93           20,508
  CATG J  EXCEPTION VALUES:       75,982,670                          80,725,761
  CATG D1 EXCEPTION VALUES:       14,606,467                          14,598,867
 TOTAL TEST VALUES (4):        1,596,093,095                       1,660,300,098
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           83,015,005
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,577,285,093 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,596,093,095 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,743,315,103 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,795,608,545 (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