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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:58:03                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              050/Coryell                                               VRSN:      P
                                                        050-904/Oglesby ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                1,350,530        1.2357             1,092,927               13               64
           2           A                1,374,037        1.0288             1,335,573               14               44
           3           A                1,325,421        0.9775             1,355,929               13               27
           4           A                1,363,703        0.8699             1,567,655               11               18
           5           D3              12,426,669        0.7714            16,109,242               26              814
  RANDOM TOTALS:                       17,840,360                          21,461,326               77              967
  CATG J  EXCEPTION VALUES:             1,462,320                           1,558,836
  CATG D1 EXCEPTION VALUES:             4,254,743                           4,245,108
 TOTAL TEST VALUES (4):                23,557,423                          27,265,270
 MARGIN OF ERROR PERCENT:               8.8948431
 MARGIN OF ERROR VALUE:                 2,425,203
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                   23,557,423 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                  24,840,067 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                  29,690,473 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   21,092,963 (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