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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:50                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              246/Williamson                                            VRSN:      W
                                                        246-906/Hutto ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              125,524,211        0.9495           132,200,328              57              941         .005322372
      2           A              125,591,269        0.9660           130,011,666              56              803         .003877671
      3           A              125,463,359        0.9730           128,944,871              57              699         .004193381
      4           A              125,412,621        0.9859           127,206,229              40              422         .003877062
      5           C               20,560,376        0.8788            23,395,967              10            1,065         .113054687
      6           C                1,443,074        1.0505             1,373,702               6               56         .022191507
      7           C                9,837,662        1.0978             8,961,252              15              267         .057915241
      8           C               10,577,254        0.9788            10,806,349               8               72         .022978420
      9           D3              70,570,718        1.1486            61,440,639              13            1,291         .109556543
     10           F1              18,324,963        0.9535            19,218,629               6               66         .004187353
     11           F1              18,652,241        0.9626            19,376,938               7               34         .009621136
     12           F1              19,285,288        0.9713            19,855,130               6               14         .001119095
     13           L1              10,095,055        0.9770            10,332,707               6               99         .004191551
     14           L1               9,853,415        1.0086             9,769,398               7               26         .000680748
  RANDOM TOTALS:                 691,191,506                         702,893,805             294            5,855
  CATG D1 EXCEPTION VALUES:        6,685,029                           7,484,395
  CATG F1 EXCEPTION VALUES:       10,033,397                          10,773,931
  CATG L1 EXCEPTION VALUES:       19,759,141                          20,414,328
 TOTAL TEST VALUES (4):          727,669,073                         741,566,459
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           37,078,323
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            704,488,136 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             727,669,073 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            778,644,782 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             789,375,814 (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