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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:18:28                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              212/Smith                                                 VRSN:      W
                                                        212-905/Tyler ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              730,546,962        0.9589           761,859,383              65           11,489         .033021684
      2           A              728,805,513        0.9489           768,053,022              65            6,497         .009968383
      3           A              728,957,047        0.9647           755,630,815              65            4,212         .014179795
      4           A              727,637,765        0.9667           752,702,767              65            2,067         .002891697
      5           F1             308,002,262        0.8905           345,875,645              15            1,251         .030425573
      6           F1             309,255,086        0.9136           338,501,627              16              341         .019858965
      7           F1             306,790,086        0.9374           327,277,668              18              106         .018678507
      8           F1             307,232,167        1.0660           288,210,288              15               32         .025257962
      9           L1             166,714,480        1.0354           161,014,564               7            1,362         .003314822
     10           L1             166,682,922        1.0711           155,618,450               7              272         .006025811
     11           L1             166,525,287        1.0906           152,691,442               7               85         .008732735
     12           L1             166,513,305        1.0083           165,142,621               5               16         .000164117
  RANDOM TOTALS:               4,813,662,882                       4,972,578,292             350           27,730
  CATG D1 EXCEPTION VALUES:       12,906,191                          10,250,723
 TOTAL TEST VALUES (4):        4,826,569,073                       4,982,829,015
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          249,141,451
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          4,733,687,564 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           4,826,569,073 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          5,231,970,466 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           5,452,982,861 (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