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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:22:41                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              226/Tom Green                                             VRSN:      W
                                                        226-903/San Angelo ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              528,746,411        0.9020           586,193,360               57           10,617
           2           A              529,604,783        0.9161           578,108,048               60            5,829
           3           A               52,812,484        0.9094            58,073,987               59            3,971
           4           A              528,199,655        0.9654           547,130,366               60            2,127
           5           F1             112,774,949        0.9652           116,841,016                7            1,046
           6           F1             113,151,902        0.6933           163,207,705                7              309
           7           F1             112,861,942        0.6344           177,903,439                7               95
           8           F1             111,922,629        0.9415           118,876,929                6               22
           9           L1              67,423,371        1.0515            64,121,133                7            1,151
          10           L1              67,210,714        1.0094            66,584,817                7              197
          11           L1              68,434,196        0.9974            68,612,589                7               62
          12           L1              66,181,258        1.0336            64,029,855                5               16
  RANDOM TOTALS:                    2,359,324,294                       2,609,683,244              289           25,442
  CATG D1 EXCEPTION VALUES:             6,229,870                           5,520,031
 TOTAL TEST VALUES (4):             2,365,554,164                       2,615,203,275
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               130,760,164
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                2,365,554,164 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:               2,484,443,111 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:               2,745,963,439 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                2,379,969,402 (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