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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:00:47                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              107/Henderson                                             VRSN:      W
                                                        129-905/Mabank ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              539,524,290        1.0403           518,623,753              29            7,675         .040023610
      2           C               45,353,070        1.0122            44,806,432              39            8,514         .002191461
      3           D3              71,663,610        0.9904            72,358,249              21            2,526         .098285776
      4           F1             104,559,520        0.9629           108,588,140              17              557         .003594793
      5           L1              50,501,430        0.9550            52,881,079              12              814         .018543135
  RANDOM TOTALS:                 811,601,920                         797,257,653             118           20,086
  CATG D1 EXCEPTION VALUES:        4,539,120                           4,117,898
 TOTAL TEST VALUES (4):          816,141,040                         801,375,551
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           40,068,778
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            761,306,773 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             816,141,040 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            841,444,329 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             738,832,553 (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