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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:23:57                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              237/Waller                                                VRSN:      P
                                                        237-905/Royal ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               26,152,048        0.8866            29,497,009               17              583
           2           A               26,229,235        0.8701            30,145,081               17              336
           3           A               26,182,804        1.0546            24,827,237               23              226
           4           A               26,033,155        0.9892            26,317,383               15              126
           5           D3              86,200,035        1.1224            76,799,746               21            4,449
           6           F1               6,701,584        0.8013             8,363,389                7              112
           7           F1               6,651,654        0.9538             6,973,846                7               38
           8           F1               6,756,098        0.9421             7,171,317                5               16
           9           F1               6,552,232        0.9249             7,084,260                4                8
          10           G1              44,898,890        1.0001            44,894,401               14               95
  RANDOM TOTALS:                      262,357,735                         262,073,669              130            5,989
  CATG J  EXCEPTION VALUES:            11,718,767                          13,681,975
  CATG D1 EXCEPTION VALUES:            12,830,750                          11,606,313
 TOTAL TEST VALUES (4):               286,907,252                         287,361,957
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                14,368,098
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 272,993,859 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  286,907,252 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 301,730,055 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  401,761,616 (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