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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:16:23                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              200/Runnels                                               VRSN:      W
                                                        200-906/Olfen ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           D3               1,594,180        0.8986             1,774,071              10              215         .064703347
  RANDOM TOTALS:                   1,594,180                           1,774,071              10              215
  CATG J  EXCEPTION VALUES:          797,030                             931,392
  CATG D1 EXCEPTION VALUES:        1,052,800                             996,773
 TOTAL TEST VALUES (4):            3,444,010                           3,702,236
 MARGIN OF ERROR PERCENT:          8.5062108
 MARGIN OF ERROR VALUE:              314,920
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:              3,387,316 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:               3,444,010 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:              4,017,156 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               2,930,105 (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