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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:20:59                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              212/Smith                                                 VRSN:      W
                                                        212-901/Arp ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               33,406,871        1.0142            32,939,135               10              592
           2           A               33,537,399        1.0176            32,957,350               14              249
           3           A               33,459,296        1.0465            31,972,571               15              150
           4           A               33,092,219        1.0388            31,856,198                8               80
           5           D3              34,191,900        0.9159            37,331,477               31            2,569
           6           G1             102,492,850        1.0307            99,440,041               20              140
  RANDOM TOTALS:                      270,180,535                         266,496,772               98            3,780
  CATG D1 EXCEPTION VALUES:             6,343,621                           4,819,079
 TOTAL TEST VALUES (4):               276,524,156                         271,315,851
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                13,565,793
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 257,750,058 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  276,524,156 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 284,881,644 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  289,849,966 (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