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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:01:16                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              072/Erath                                                 VRSN:      P
                                                        072-910/Morgan Mill ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                1,041,858        1.0974               949,388                8               36
           2           A                1,052,805        1.0343             1,017,891                6               22
           3           A                1,078,779        1.0445             1,032,819                7               16
           4           A                1,010,106        0.8180             1,234,848                5                9
           5           D3              25,564,510        1.0670            23,959,241               21            1,259
           6           G1               6,201,290        1.0661             5,816,800               18               68
  RANDOM TOTALS:                       35,949,348                          34,010,987               65            1,410
  CATG D1 EXCEPTION VALUES:             4,488,560                           3,931,368
 TOTAL TEST VALUES (4):                40,437,908                          37,942,355
 MARGIN OF ERROR PERCENT:              14.9901739
 MARGIN OF ERROR VALUE:                 5,687,625
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  32,254,730 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   40,437,908 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  43,629,980 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   38,649,153 (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