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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:20:06                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              207/Schleicher                                            VRSN:      P
                                                        207-901/Schleicher County ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                4,196,779        0.7899             5,313,051               11              311
           2           A                4,182,380        0.7469             5,599,652               11              166
           3           A                4,233,974        0.7286             5,811,109               12              104
           4           A                4,154,017        0.8056             5,156,426               12               58
           5           D3              12,818,140        0.6891            18,601,277               16            3,429
           6           G1             115,664,530        1.1398           101,477,917               20              542
  RANDOM TOTALS:                      145,249,820                         141,959,432               82            4,610
  CATG J  EXCEPTION VALUES:             8,303,960                           8,237,571
  CATG D1 EXCEPTION VALUES:            27,322,710                          32,765,503
 TOTAL TEST VALUES (4):               180,876,490                         182,962,506
 MARGIN OF ERROR PERCENT:               7.9752537
 MARGIN OF ERROR VALUE:                14,591,724
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 168,370,782 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  180,876,490 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 197,554,230 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  220,997,131 (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