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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:54:50                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              022/Brewster                                              VRSN:      W
                                                        022-004/Terlingua CSD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                4,071,727        0.9461             4,303,696               23              168
           2           A                4,116,630        0.9423             4,368,704               21               81
           3           A                4,080,906        1.0005             4,078,867               19               46
           4           A                4,066,055        0.9853             4,126,718               18               20
           5           F1               2,090,282        0.8874             2,355,513               18               30
  RANDOM TOTALS:                       18,425,600                          19,233,498               99              345
  CATG D1 EXCEPTION VALUES:               178,490                             214,188
  CATG F1 EXCEPTION VALUES:             7,687,567                           8,159,286
 TOTAL TEST VALUES (4):                26,291,657                          27,606,972
 MARGIN OF ERROR PERCENT:               5.0000014
 MARGIN OF ERROR VALUE:                 1,380,349
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  26,226,623 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   26,291,657 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  28,987,321 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   50,817,113 (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