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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:59:49                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              063/Dickens                                               VRSN:      P
                                                        063-903/Spur ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                3,090,379        1.0510             2,940,418                7              305
           2           A                3,082,669        0.8544             3,607,993               11              163
           3           A                3,100,857        0.8136             3,811,279                7               98
           4           A                3,060,059        0.9477             3,228,932                7               55
           5           D3              12,631,090        0.8726            14,475,235               14            2,449
           6           G1              78,416,840        0.9822            79,837,956               17               96
  RANDOM TOTALS:                      103,381,894                         107,901,813               63            3,166
  CATG D1 EXCEPTION VALUES:            20,283,910                          20,165,807
 TOTAL TEST VALUES (4):               123,665,804                         128,067,620
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 6,403,381
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 121,664,239 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  123,665,804 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 134,471,001 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  129,076,850 (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