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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:39                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-918/Community ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               43,207,280        1.0077            42,877,126                8              638
           2           A               43,244,531        1.0120            42,731,750               12              349
           3           A               43,265,488        1.0007            43,235,223               35              248
           4           A               43,051,756        0.9927            43,368,345               30              176
           5           C                4,021,746        1.0238             3,928,254                7              379
           6           C                4,277,915        1.0607             4,033,105               10              187
           7           C                3,863,494        1.1023             3,504,939                8              122
           8           C                3,903,785        1.1793             3,310,256                8               70
           9           D3              54,197,699        1.0437            51,928,427               24           34,798
  RANDOM TOTALS:                      243,033,694                         238,917,425              142           36,967
  CATG D1 EXCEPTION VALUES:             4,284,335                           3,780,927
 TOTAL TEST VALUES (4):               247,318,029                         242,698,352
 MARGIN OF ERROR PERCENT:               5.0000002
 MARGIN OF ERROR VALUE:                12,134,918
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 230,563,434 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  247,318,029 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 254,833,270 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  257,761,858 (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