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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:56:23                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              039/Clay                                                  VRSN:      P
                                                        039-902/Henrietta ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               28,040,774        1.0364            27,055,938               41              814
           2           A               28,055,818        1.0061            27,885,715               26              440
           3           A               28,010,517        0.9906            28,276,314               25              312
           4           A               28,045,484        1.0158            27,609,258               12              202
           5           D3              25,048,461        1.0126            24,736,778               30            2,914
           6           G1               4,404,580        0.9668             4,555,834               12               70
  RANDOM TOTALS:                      141,605,634                         140,119,837              146            4,752
  CATG J  EXCEPTION VALUES:            20,977,102                          21,433,635
  CATG D1 EXCEPTION VALUES:            19,436,790                          17,680,626
  CATG G1 EXCEPTION VALUES:            11,345,540                          12,044,774
 TOTAL TEST VALUES (4):               193,365,066                         191,278,872
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                 9,563,944
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 181,714,928 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  193,365,066 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 200,842,816 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  244,453,265 (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