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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:55:06                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              025/Brown                                                 VRSN:      W
                                                        025-904/Blanket ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                1,150,386        0.9726             1,182,795               11               83
           2           A                1,181,334        0.9565             1,235,059               11               44
           3           A                1,138,155        0.9384             1,212,868               10               27
           4           A                1,160,509        0.9518             1,219,278                9               16
           5           D3              15,267,602        0.9765            15,635,025               31            1,117
           6           L1                 430,075        0.9344               460,269                6               12
           7           L1                 886,024        0.9785               905,492                5                6
  RANDOM TOTALS:                       21,214,085                          21,850,786               83            1,305
  CATG J  EXCEPTION VALUES:             2,561,450                           2,597,931
  CATG D1 EXCEPTION VALUES:             4,173,210                           4,281,507
  CATG L1 EXCEPTION VALUES:             1,884,380                           1,938,867
 TOTAL TEST VALUES (4):                29,833,125                          30,669,091
 MARGIN OF ERROR PERCENT:               5.0000015
 MARGIN OF ERROR VALUE:                 1,533,455
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  29,135,636 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   29,833,125 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  32,202,546 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   26,149,660 (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