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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:22:28                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              227/Travis                                                VRSN:      P
                                                        227-904/Pflugerville ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              782,119,470        0.9688           807,307,463               60            6,840
           2           A              782,239,752        0.9778           799,999,746               59            5,689
           3           A              782,286,552        0.9826           796,139,377               61            4,828
           4           A              782,137,933        0.9860           793,243,340               60            3,578
           5           B               75,280,921        1.0064            74,802,187               14              250
           6           B               64,196,674        1.0509            61,087,329                5                6
           7           B               73,780,525        0.8745            84,368,811                4                5
           8           F1             181,805,897        0.8612           211,107,637               11              224
           9           F1             183,376,162        1.0155           180,577,215                8               57
          10           F1             185,246,885        1.0281           180,183,722                6               19
          11           F1             177,124,767        1.0034           176,524,583                3                5
          12           L1              96,058,466        0.9799            98,028,846                7              503
          13           L1              96,294,866        0.9399           102,452,246                8               90
          14           L1             100,646,159        1.0297            97,743,186                6               30
          15           L1              91,421,408        0.9781            93,468,365                5               10
  RANDOM TOTALS:                    4,454,016,437                       4,557,034,053              317           22,134
  CATG D1 EXCEPTION VALUES:             4,684,671                           4,133,723
  CATG B  EXCEPTION VALUES:            59,035,084                          65,275,075
 TOTAL TEST VALUES (4):             4,517,736,192                       4,626,442,851
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               231,322,143
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:               4,395,120,708 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                4,517,736,192 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:               4,857,764,994 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                4,940,195,579 (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