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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:22:39                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              226/Tom Green                                             VRSN:      W
                                                        226-901/Christoval ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               53,402,740        0.9753            54,755,193               34              773
           2           C                3,482,505        1.0277             3,388,640                9              295
           3           D3              16,913,889        0.9885            17,110,662               20            1,517
           4           G1              12,959,850        0.9614            13,480,185               11               60
  RANDOM TOTALS:                       86,758,984                          88,734,680               74            2,645
  CATG J  EXCEPTION VALUES:             3,675,210                           3,654,243
  CATG D1 EXCEPTION VALUES:             9,777,040                           8,806,058
 TOTAL TEST VALUES (4):               100,211,234                         101,194,981
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 5,059,749
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  96,135,232 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  100,211,234 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 106,254,730 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   92,224,481 (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