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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:23:51                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              233/Val Verde                                             VRSN:      W
                                                        233-903/Comstock Cons ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                3,646,978        1.0989             3,318,753                9              163
           2           A                3,657,024        1.0160             3,599,433                8               76
           3           A                3,716,972        1.0089             3,684,183                6               45
           4           A                3,608,075        0.9929             3,633,876                6               25
           5           D3               8,017,301        0.8752             9,160,536               23            3,983
           6           G1              75,848,290        1.0001            75,840,706               19               94
  RANDOM TOTALS:                       98,494,640                          99,237,487               71            4,386
  CATG J  EXCEPTION VALUES:            15,983,980                          16,333,615
  CATG D1 EXCEPTION VALUES:            17,616,960                          23,311,478
 TOTAL TEST VALUES (4):               132,095,580                         138,882,580
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 6,944,129
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 131,938,451 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  132,095,580 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 145,826,709 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  143,817,809 (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