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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:52                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              221/Taylor                                                VRSN:      W
                                                        221-901/Abilene ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              415,665,804        1.0041           413,968,533              51           10,901         .013499668
      2           A              415,606,198        0.9938           418,199,032              55            5,826         .005325246
      3           A              415,634,229        0.9940           418,143,088              64            4,130         .002581307
      4           A              415,538,527        0.9860           421,438,668              56            2,262         .001409223
      5           B               48,677,386        0.9604            50,684,492               8              560         .002738687
      6           B               50,930,923        1.0722            47,501,327               7               27         .093550212
      7           B               47,758,942        1.0039            47,573,406               4               10         .002583062
      8           B               45,972,127        0.9520            48,290,049               4                5         .005491002
      9           F1             171,972,739        0.9821           175,107,157              21            1,247         .052257192
     10           F1             172,236,000        0.9227           186,665,222               9              293         .077786071
     11           F1             172,012,490        1.0265           167,571,836               7               91         .008273624
     12           F1             171,118,277        0.9446           181,154,221               7               28         .005185707
     13           L1             113,463,867        0.9653           117,542,595              10            1,402         .003308829
     14           L1             114,118,579        1.0423           109,487,268               8              268         .004537486
     15           L1             113,212,239        0.8893           127,304,890               6               82         .028816035
     16           L1             113,019,922        1.0352           109,176,895               6               20         .003163975
  RANDOM TOTALS:               2,996,938,249                       3,039,808,679             323           27,152
  CATG D1 EXCEPTION VALUES:        1,634,889                           1,664,103
 TOTAL TEST VALUES (4):        2,998,573,138                       3,041,472,782
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          152,073,639
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          2,889,399,143 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           2,998,573,138 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          3,193,546,421 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           2,982,879,316 (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