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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:04:01                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              091/Grayson                                               VRSN:      W
                                                        091-913/Pottsboro ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               76,723,018        1.0372            73,971,286               37            1,510
           2           A               76,778,545        0.9416            81,540,511               37              726
           3           A               76,818,027        0.9863            77,885,052               38              449
           4           A               76,606,266        0.9853            77,749,179               17              243
           5           D3              34,059,425        0.8801            38,699,494               17            1,784
           6           F1               9,624,715        1.0112             9,518,112                8               75
           7           F1               9,327,528        1.0180             9,162,601                6               16
           8           F1              12,448,140        1.0992            11,324,727                4                6
  RANDOM TOTALS:                      372,385,664                         379,850,962              164            4,809
  CATG D1 EXCEPTION VALUES:             3,390,655                           2,689,782
  CATG F1 EXCEPTION VALUES:             5,746,853                           7,023,302
 TOTAL TEST VALUES (4):               381,523,172                         389,564,046
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                19,478,202
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 370,085,844 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  381,523,172 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 409,042,248 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  443,470,394 (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