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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:15                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              236/Walker                                                VRSN:      W
                                                        236-902/Huntsville ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              659,386,560        0.9480           695,555,443               40            9,648
           2           B               98,944,700        1.0103            97,935,960               11              197
           3           D3             148,231,682        0.9444           156,958,579               17          293,969
           4           F1             180,733,290        0.9754           185,291,460               11              745
           5           L1             124,652,330        0.9987           124,814,589               11            1,076
  RANDOM TOTALS:                    1,211,948,562                       1,260,556,031               90          305,635
  CATG D1 EXCEPTION VALUES:            41,541,531                          34,740,514
 TOTAL TEST VALUES (4):             1,253,490,093                       1,295,296,545
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                64,764,827
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:               1,230,531,718 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                1,253,490,093 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:               1,360,061,372 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                1,189,050,015 (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