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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:11:49                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              139/Lamar                                                 VRSN:      W
                                                        139-908/Roxton ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                2,660,301        0.9583             2,776,063                9              131
           2           A                2,640,891        0.9486             2,783,988                7               73
           3           A                2,676,853        0.9596             2,789,551                7               51
           4           A                2,644,758        0.9435             2,803,135                6               33
           5           D3               8,655,230        0.9676             8,945,050               20            1,222
  RANDOM TOTALS:                       19,278,033                          20,097,787               49            1,510
  CATG J  EXCEPTION VALUES:             1,942,507                           1,853,395
  CATG D1 EXCEPTION VALUES:             6,628,701                           5,770,762
 TOTAL TEST VALUES (4):                27,849,241                          27,721,944
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 1,386,097
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  26,335,847 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   27,849,241 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  29,108,041 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   25,838,917 (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