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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:02:37                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              080/Franklin                                              VRSN:      W
                                                        080-901/Mount Vernon ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               82,445,966        0.9944            82,910,263               48            1,207
           2           A               82,415,353        0.9863            83,560,127               29              522
           3           A               82,423,247        0.9986            82,538,801               23              303
           4           A               82,398,383        0.9796            84,114,315               20              172
           5           D3              90,527,580        0.9890            91,534,459               42            5,645
           6           G1               7,902,570        0.9750             8,105,200                7               46
  RANDOM TOTALS:                      428,113,099                         432,763,165              169            7,895
  CATG D1 EXCEPTION VALUES:            13,830,640                          13,886,073
  CATG G1 EXCEPTION VALUES:            16,000,060                          15,833,207
 TOTAL TEST VALUES (4):               457,943,799                         462,482,445
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                23,124,122
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 439,358,323 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  457,943,799 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 485,606,567 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  585,782,382 (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