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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:27                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-908/Melissa ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               37,663,862        0.9991            37,697,790               35              373
           2           A               37,794,426        1.0089            37,461,023               19              168
           3           A               37,576,635        0.9858            38,117,909               10              126
           4           A               37,719,890        0.9959            37,875,178                6               85
           5           D3              23,907,768        0.9177            26,051,834               11           15,510
           6           F1               4,834,882        0.9700             4,984,414                6               24
           7           F1               5,107,503        0.9165             5,572,835                5               11
           8           L1               3,262,232        0.8537             3,821,286                8               42
           9           L1               3,157,234        0.9443             3,343,465                3                8
          10           L1               3,854,256        0.9762             3,948,224                3                5
  RANDOM TOTALS:                      194,878,688                         198,873,958              106           16,352
  CATG D1 EXCEPTION VALUES:             1,719,901                           1,501,708
  CATG F1 EXCEPTION VALUES:             8,508,023                           8,084,842
  CATG L1 EXCEPTION VALUES:             2,940,649                           3,529,483
 TOTAL TEST VALUES (4):               208,047,261                         211,989,991
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                10,599,500
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 201,390,491 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  208,047,261 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 222,589,491 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  218,396,955 (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