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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:13:35                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              101/Harris                                                VRSN:      W
                                                        101-925/Huffman ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              119,136,664        0.9598           124,126,551              28            1,474         .012213861
      2           A              119,221,351        0.9984           119,412,411              33              915         .002143927
      3           A              119,163,795        0.9346           127,502,456              22              602         .028019151
      4           A              118,975,046        0.9946           119,620,999              34              388         .012726069
      5           C               12,338,407        0.7799            15,820,499              10            1,470         .143990942
      6           C               12,172,112        0.8183            14,874,877              10              491         .027714743
      7           C               12,252,772        0.8228            14,891,556               9              307         .081569682
      8           C               12,229,233        0.9253            13,216,506              16              205         .059748583
  RANDOM TOTALS:                 525,489,380                         549,465,855             162            5,852
  CATG D1 EXCEPTION VALUES:        8,056,716                           8,006,318
 TOTAL TEST VALUES (4):          533,546,096                         557,472,173
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           27,873,609
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            529,598,564 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             533,546,096 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            585,345,782 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             566,775,298 (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