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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:16:12                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              110/Hockley                                               VRSN:      W
                                                        110-906/Smyer ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                2,778,595        0.7788             3,567,790              12              113         .023411213
      2           A                2,825,528        0.9167             3,082,282              15               69         .021862552
      3           A                2,734,370        0.8981             3,044,616              12               49         .035459974
      4           A                2,754,348        0.9712             2,836,026              12               33         .040122527
      5           D3              11,027,542        0.9321            11,830,857              20              842         .027396536
      6           G1              28,560,240        1.1759            24,287,984              20               26         .052901173
  RANDOM TOTALS:                  50,680,623                          48,649,555              91            1,132
  CATG J  EXCEPTION VALUES:        1,228,120                           1,346,886
  CATG D1 EXCEPTION VALUES:        7,327,463                           5,692,439
 TOTAL TEST VALUES (4):           59,236,206                          55,688,880
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,784,444
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             52,904,436 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             58,473,324 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              59,236,206 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):              61,076,982 (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