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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:22                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              237/Waller                                                VRSN:      W
                                                        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               26,132,934        0.8866            29,475,450               17              583
           2           A               26,210,065        0.8701            30,123,049               17              336
           3           A               26,163,668        1.0546            24,809,092               23              226
           4           A               26,014,128        0.9892            26,298,148               15              126
           5           D3              86,060,775        1.1224            76,675,673               21            4,452
           6           F1               6,682,186        0.8013             8,339,181                7              112
           7           F1               6,632,400        0.9538             6,953,659                7               38
           8           F1               6,736,542        0.9421             7,150,559                5               16
           9           F1               6,533,266        0.9249             7,063,754                4                8
          10           G1              44,898,890        1.0001            44,894,401               14               95
  RANDOM TOTALS:                      262,064,854                         261,782,966              130            5,992
  CATG J  EXCEPTION VALUES:            11,718,767                          13,480,790
  CATG D1 EXCEPTION VALUES:            12,832,730                          11,613,402
 TOTAL TEST VALUES (4):               286,616,351                         286,877,158
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                14,343,858
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 272,533,300 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  286,616,351 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 301,221,016 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  401,087,623 (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