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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:59:57                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              061/Denton                                                VRSN:      W
                                                        061-911/Northwest ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              405,620,710        0.9913           409,180,581               54            3,485
           2           A              405,671,026        1.0002           405,589,908               58            2,173
           3           A              405,392,690        0.9976           406,367,973               58            1,671
           4           A              405,624,613        0.9963           407,130,998               57            1,090
           5           F1             211,475,676        0.8931           236,788,351                8              314
           6           F1             217,708,341        1.0205           213,334,974                8               29
           7           F1             204,461,888        1.0405           196,503,496                7               13
           8           F1             202,582,136        1.0951           184,989,623                3                7
           9           G1           1,448,780,670        1.0869         1,332,947,530               20            1,440
          10           L1              71,717,890        1.0233            70,084,912                7              157
          11           L1             207,806,325        1.0027           207,246,759                8               17
  RANDOM TOTALS:                    4,186,841,965                       4,070,165,105              288           10,396
  CATG D1 EXCEPTION VALUES:            12,486,220                          10,463,606
 TOTAL TEST VALUES (4):             4,199,328,185                       4,080,628,711
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               204,031,436
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:               3,876,597,275 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                4,199,328,185 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:               4,284,660,147 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                5,010,395,911 (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