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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:58:07                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              050/Coryell                                               VRSN:      P
                                                        050-910/Copperas Cove ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              150,288,520        0.9776           153,732,119               44            2,825
           2           A              150,218,487        0.9815           153,049,910               55            2,044
           3           A              150,160,839        0.9987           150,356,302               46            1,635
           4           A              150,260,840        0.9391           160,005,154               62            1,126
           5           B               13,781,093        0.8528            16,159,818                8              248
           6           B               13,759,465        0.9342            14,728,607               13              157
           7           B               13,905,979        0.8760            15,874,405                7              101
           8           B               13,649,181        0.6120            22,302,583                6               21
           9           F1              15,875,336        0.8255            19,231,176               20              131
          10           F1              15,966,911        0.9494            16,817,897               16               53
          11           F1              17,443,262        0.8138            21,434,335               13               19
  RANDOM TOTALS:                      705,309,913                         743,692,306              290            8,360
  CATG D1 EXCEPTION VALUES:             1,843,877                           1,466,067
  CATG F1 EXCEPTION VALUES:            13,380,960                          19,107,827
 TOTAL TEST VALUES (4):               720,534,750                         764,266,200
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                38,213,310
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  720,534,750 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 726,052,890 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 802,479,510 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  735,031,770 (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