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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:10:38                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              107/Henderson                                             VRSN:      P
                                                        129-905/Mabank ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              122,661,954        0.8323           147,377,092               28            2,720
           2           A              122,600,680        0.8550           143,392,608               29            1,388
           3           A              122,579,970        0.8927           137,313,734               21              843
           4           A              122,558,832        0.9545           128,401,081               15              496
           5           D3              66,137,860        0.8730            75,759,290               22            2,322
           6           F1              23,776,101        0.9754            24,375,744               13              218
           7           F1              23,768,700        1.0890            21,826,171                9               88
           8           F1              24,209,787        1.0174            23,795,741                6               46
           9           F1              23,237,662        0.9952            23,349,741                5               12
          10           L1              10,962,268        0.9666            11,341,059                7              276
          11           L1              11,052,526        1.0550            10,476,328                7               70
          12           L1              11,775,745        1.0835            10,868,246                6               27
  RANDOM TOTALS:                      685,322,085                         758,276,835              168            8,506
  CATG D1 EXCEPTION VALUES:             4,466,760                           3,877,138
  CATG L1 EXCEPTION VALUES:             9,130,110                           9,431,709
 TOTAL TEST VALUES (4):               698,918,955                         771,585,682
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                38,579,284
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                  698,918,955 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                 733,006,398 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                 810,164,966 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  695,099,403 (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