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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:16:44                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              178/Nueces                                                VRSN:      P
                                                        178-908/Port Aransas ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              160,272,871        1.0216           156,884,173               39            1,638
           2           A              155,398,287        1.0061           154,456,105               41              865
           3           A              158,193,627        1.0161           155,687,065               35              592
           4           A              157,239,065        1.0013           157,034,920               23              326
           5           C               15,608,543        0.9577            16,297,946               21              533
           6           C               15,563,766        0.9740            15,979,226               35              246
           7           C               15,593,845        0.9999            15,595,405               10              136
           8           C               15,612,836        0.9901            15,768,949                7               60
           9           F1              14,587,248        0.8925            16,344,255                7              109
          10           F1              14,823,267        0.9043            16,391,979                6               47
          11           F1              14,866,898        1.0171            14,616,948                6               23
          12           F1              13,970,720        0.9512            14,687,468                5               11
  RANDOM TOTALS:                      751,730,973                         749,744,439              235            4,586
  CATG D1 EXCEPTION VALUES:               103,251                              88,716
  CATG G1 EXCEPTION VALUES:            52,098,869                          52,622,061
 TOTAL TEST VALUES (4):               803,933,093                         802,455,216
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                40,122,761
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 762,332,455 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  803,933,093 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 842,577,977 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  851,061,538 (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