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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:10:45                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              091/Grayson                                               VRSN:      W
                                                        091-909/Whitesboro ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               42,707,859        1.0180            41,952,710              29            1,331         .012181223
      2           A               42,756,265        1.0127            42,220,070              17              715         .019265643
      3           A               42,703,160        0.9771            43,703,981              26              462         .002664957
      4           A               42,646,214        0.9746            43,757,659              11              268         .000767213
      5           D3              80,406,515        1.0067            79,871,377              54            3,562         .056923868
      6           F1               6,223,276        1.0234             6,080,981               8               85         .051567884
      7           F1               6,098,335        0.8644             7,054,992               5               25         .050694994
      8           F1               6,136,509        0.8121             7,556,347               5               13         .056960868
      9           F1               6,101,641        1.0437             5,846,164               3                6         .016833423
     10           G1               4,955,640        1.0091             4,910,950               6               47         .026736285
     11           G1               5,388,465        0.9254             5,822,850               5               14         .031804017
     12           G1               4,870,730        1.0104             4,820,596               3                6         .000001287
     13           L1               3,834,237        0.9142             4,194,090               7              144         .047576165
     14           L1               3,930,915        0.9759             4,027,990               8               40         .011097563
     15           L1               3,675,096        0.9530             3,856,344               4               10         .014138665
     16           L1               3,678,338        1.1020             3,337,875               3                4         .018933674
  RANDOM TOTALS:                 306,113,195                         309,014,976             194            6,732
  CATG D1 EXCEPTION VALUES:        8,693,500                           5,830,502
  CATG G1 EXCEPTION VALUES:        4,569,410                           4,632,508
 TOTAL TEST VALUES (4):          319,376,105                         319,477,986
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           15,973,899
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            303,504,087 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             319,376,105 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            335,451,885 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             300,668,775 (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