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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:25:00                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              246/Williamson                                            VRSN:      W
                                                        246-911/Taylor ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               94,969,538        0.9151           103,780,503              26            1,494         .043253125
      2           A               94,882,873        0.9784            96,977,589              38              965         .015356066
      3           A               95,024,137        0.9668            98,287,275              37              777         .007501306
      4           A               94,790,923        0.9768            97,042,304              29              525         .011286785
      5           D3              43,995,280        0.9613            45,766,441              12            1,445         .011199728
      6           F1              29,181,836        0.9756            29,911,681               8              198         .018479836
      7           F1              30,213,745        0.9582            31,531,773               7               49         .005185574
      8           F1              32,490,404        0.8137            39,929,217               5                6         .023849177
      9           L1               7,308,261        1.0038             7,280,595               7              159         .031735683
     10           L1               7,296,369        1.0010             7,289,080               6               45         .001904320
     11           L1               8,350,936        1.0151             8,226,713               3               11         .000188074
  RANDOM TOTALS:                 538,504,302                         566,023,171             178            5,674
  CATG D1 EXCEPTION VALUES:        8,303,433                           9,290,893
  CATG F1 EXCEPTION VALUES:       18,291,080                          18,291,080
  CATG L1 EXCEPTION VALUES:       11,992,995                          11,446,302
 TOTAL TEST VALUES (4):          577,091,810                         605,051,446
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           30,252,572
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            574,798,874 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             577,091,810 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            635,304,018 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             656,587,724 (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