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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:16:35                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              175/Navarro                                               VRSN:      W
                                                        175-905/Frost ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                2,746,249        0.9657             2,843,791                9              178
           2           A                2,733,922        0.8693             3,144,970                9               94
           3           A                2,760,261        0.9297             2,968,980                8               55
           4           A                2,738,701        1.0059             2,722,637                8               32
           5           D3              16,716,286        0.9967            16,771,632               20            1,473
  RANDOM TOTALS:                       27,695,419                          28,452,010               54            1,832
  CATG J  EXCEPTION VALUES:             3,098,150                           3,532,666
  CATG D1 EXCEPTION VALUES:             5,411,410                           4,998,036
 TOTAL TEST VALUES (4):                36,204,979                          36,982,712
 MARGIN OF ERROR PERCENT:               5.0000011
 MARGIN OF ERROR VALUE:                 1,849,136
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  35,133,576 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   36,204,979 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  38,831,848 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   40,844,134 (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