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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:54:58                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              023/Briscoe                                               VRSN:      W
                                                        023-902/Silverton ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                8,521,083        0.9340             9,123,215               28              433
           2           D3               5,446,166        0.8286             6,572,732               24          352,280
  RANDOM TOTALS:                       13,967,249                          15,695,947               52          352,713
  CATG J  EXCEPTION VALUES:               618,769                             578,592
  CATG D1 EXCEPTION VALUES:            30,337,350                          28,848,358
 TOTAL TEST VALUES (4):                44,923,368                          45,122,897
 MARGIN OF ERROR PERCENT:               5.0000003
 MARGIN OF ERROR VALUE:                 2,256,145
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  42,866,752 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   44,923,368 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  47,379,042 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   45,651,862 (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