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DATE: 01/26/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:20:55                                       2005 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   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                9,185,525        1.0040             9,148,929              22              430         .017447614
      2           D3               6,079,636        1.0303             5,900,841              20          352,201         .042317449
  RANDOM TOTALS:                  15,265,161                          15,049,770              42          352,631
  CATG J  EXCEPTION VALUES:          597,100                             548,511
  CATG D1 EXCEPTION VALUES:       33,311,990                          27,311,255
 TOTAL TEST VALUES (4):           49,174,251                          42,909,536
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            2,145,477
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             40,764,059 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             45,055,013 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              49,174,251 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):              49,334,052 (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