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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:03:14                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              090/Gray                                                  VRSN:      P
                                                        090-903/McLean ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                8,512,550        0.9762             8,720,088               10              521
           2           D3               5,792,357        0.7049             8,217,275               10            1,113
           3           G1              77,161,350        1.0986            70,236,073               34              540
           4           L1               6,626,112        1.0178             6,510,230               14               85
  RANDOM TOTALS:                       98,092,369                          93,683,666               68            2,259
  CATG J  EXCEPTION VALUES:             5,777,939                           5,907,466
  CATG D1 EXCEPTION VALUES:             8,423,930                           9,323,442
 TOTAL TEST VALUES (4):               112,294,238                         108,914,574
 MARGIN OF ERROR PERCENT:               5.0000003
 MARGIN OF ERROR VALUE:                 5,445,729
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 103,468,845 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  112,294,238 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 114,360,303 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  119,823,754 (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