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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:19                                       2004 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
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               45,414,569        0.9655            47,037,358               25              554
           2           A               45,595,586        1.0267            44,409,843               28              316
           3           A               45,589,793        1.0520            43,336,305               10              190
           4           A               45,243,063        0.9786            46,232,437                7              122
           5           D3             128,794,418        0.9922           129,806,912               12           57,094
  RANDOM TOTALS:                      310,637,429                         310,822,855               82           58,276
  CATG D1 EXCEPTION VALUES:             6,738,496                           5,903,479
 TOTAL TEST VALUES (4):               317,375,925                         316,726,334
 MARGIN OF ERROR PERCENT:               5.9360059
 MARGIN OF ERROR VALUE:                18,800,894
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 297,925,440 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  317,375,925 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 335,527,228 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  383,585,215 (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