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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:40:23                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              039/Clay                                                  VRSN:      W
                                                        039-902/Henrietta ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               29,295,741        1.0180            28,777,742              19              816         .001152628
      2           A               29,285,244        1.0200            28,711,024              15              441         .001256222
      3           A               29,295,365        0.9930            29,501,878              13              312         .005980344
      4           A               29,246,423        1.0121            28,896,772              10              201         .002715677
      5           D3              27,073,071        1.0017            27,027,125              28            2,927         .002432891
      6           G1               1,329,350        1.0582             1,256,237               4               12         .002518108
      7           G1               1,350,580        1.1173             1,208,789               3                5         .008399373
      8           G1               1,224,680        0.9183             1,333,638               2                3         .014772525
  RANDOM TOTALS:                 148,100,454                         146,713,205              94            4,717
  CATG J  EXCEPTION VALUES:       58,936,318                          60,429,851
  CATG D1 EXCEPTION VALUES:       19,377,640                          15,914,455
  CATG G1 EXCEPTION VALUES:       15,837,020                          15,835,031
 TOTAL TEST VALUES (4):          242,251,432                         238,892,542
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           11,944,627
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            226,947,915 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             242,251,432 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            250,837,169 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             260,730,387 (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