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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:05:40                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              101/Harris                                                VRSN:      P
                                                        101-925/Huffman ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              105,535,522        0.9335           113,053,585               32            1,404
           2           A              104,984,370        0.9664           108,634,489               19              877
           3           A              105,840,404        0.9852           107,430,374               16              581
           4           A              104,486,105        0.9064           115,275,932               17              362
           5           C               10,383,382        0.7201            14,419,361               15            1,685
           6           C               10,329,214        0.8044            12,840,893               21              531
           7           C               10,356,432        0.6620            15,644,157               15              350
           8           C               10,339,998        0.8549            12,094,980               14              135
  RANDOM TOTALS:                      462,255,427                         499,393,771              149            5,925
  CATG D1 EXCEPTION VALUES:             7,312,380                           7,244,267
 TOTAL TEST VALUES (4):               469,567,807                         506,638,038
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                25,331,902
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  469,567,807 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 481,306,136 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 531,969,940 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  509,607,255 (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