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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:52:17                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              007/Atascosa                                              VRSN:      W
                                                        007-901/Charlotte ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                4,323,401        1.0488             4,122,236                7              190
           2           A                4,365,141        0.9281             4,703,309                8               98
           3           A                4,316,180        0.9102             4,742,013                8               67
           4           A                4,265,147        0.9118             4,677,722                6               39
           5           D3              13,036,380        1.1434            11,401,417               23            1,713
           6           G1               4,138,414        0.9762             4,239,310               19               70
  RANDOM TOTALS:                       34,444,663                          33,886,007               71            2,177
  CATG J  EXCEPTION VALUES:             5,702,025                           5,721,895
  CATG D1 EXCEPTION VALUES:            12,477,490                          14,911,195
  CATG G1 EXCEPTION VALUES:             1,083,826                           1,051,591
 TOTAL TEST VALUES (4):                53,708,004                          55,570,688
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 2,778,534
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  52,792,154 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   53,708,004 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  58,349,222 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   55,295,821 (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