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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:54:38                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              025/Brown                                                 VRSN:      P
                                                        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                1,150,572        0.9726             1,182,986               11               83
           2           A                1,181,525        0.9565             1,235,259               11               44
           3           A                1,138,339        0.9384             1,213,064               10               27
           4           A                1,160,697        0.9518             1,219,476                9               16
           5           D3              15,278,132        0.9765            15,645,808               31            1,123
           6           L1                 428,271        0.9482               451,667                8               12
           7           L1                 882,308        0.9785               901,694                5                6
  RANDOM TOTALS:                       21,219,844                          21,849,954               85            1,311
  CATG J  EXCEPTION VALUES:             2,561,450                           2,654,866
  CATG D1 EXCEPTION VALUES:             4,173,170                           4,281,341
  CATG L1 EXCEPTION VALUES:             1,884,380                           1,938,867
 TOTAL TEST VALUES (4):                29,838,844                          30,725,028
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 1,536,251
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  29,188,777 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   29,838,844 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  32,261,279 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   26,442,722 (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