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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:41:04                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-903/Celina ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               52,435,620        0.9498            55,207,012              43              527         .036491884
      2           A               52,415,673        0.9977            52,536,507              79              297         .002846587
      3           A               52,627,411        1.0118            52,013,650              17              179         .000504389
      4           A               52,040,448        0.9850            52,832,942              14              114         .010339967
      5           C                5,562,854        0.8778             6,337,268               7              375         .060035449
      6           C                3,748,405        0.8193             4,575,131               7              166         .044796234
      7           C                4,629,147        0.9866             4,692,020               7              114         .003182937
      8           C                4,573,912        0.9731             4,700,351               7               32         .015254682
      9           D3             132,972,749        0.9270           143,444,174              30            2,933         .030002905
     10           F1               4,169,820        1.0681             3,903,960              10               39         .008127910
     11           F1               4,393,990        0.9412             4,668,498               7               17         .006653625
     12           F1               4,611,467        1.0436             4,418,807               5                8         .003797523
     13           F1               3,248,816        0.8485             3,828,893               2                3         .000704964
     14           L1               2,689,728        0.9759             2,756,151              13               58         .002228432
     15           L1               2,652,582        0.9851             2,692,703               5                8         .003689644
  RANDOM TOTALS:                 382,772,622                         398,608,067             253            4,870
  CATG D1 EXCEPTION VALUES:        6,704,165                           5,937,269
  CATG L1 EXCEPTION VALUES:        6,168,145                           6,426,133
 TOTAL TEST VALUES (4):          395,644,932                         410,971,469
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           20,548,573
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            390,422,896 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             395,644,932 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            431,520,042 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             415,148,093 (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