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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:05:50                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              063/Dickens                                               VRSN:      W
                                                        063-906/Patton Springs ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           D3               7,784,920        0.9965             7,812,263              22            1,465         .009087982
  RANDOM TOTALS:                   7,784,920                           7,812,263              22            1,465
  CATG J  EXCEPTION VALUES:          822,641                             825,346
  CATG D1 EXCEPTION VALUES:       11,765,260                          12,806,929
 TOTAL TEST VALUES (4):           20,372,821                          21,444,538
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            1,072,227
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             20,372,311 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              20,372,821 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             22,516,765 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              21,063,437 (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