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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:25                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-907/McKinney ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              974,338,130        1.0003           974,045,916               54            6,859
           2           A              974,438,580        1.0039           970,653,033               55            5,153
           3           A              974,536,696        1.0031           971,524,969               55            3,810
           4           A              974,379,042        1.0006           973,794,765               56            2,212
           5           F1             174,813,356        0.9230           189,396,919                8              327
           6           F1             174,466,289        0.7195           242,482,681                9               94
           7           F1             178,209,286        0.8318           214,245,355               12               34
           8           F1             170,577,028        0.9383           181,793,699                4                8
           9           L1              99,068,030        0.9258           107,008,025                7              377
          10           L1             100,609,531        0.8755           114,916,654                7               49
          11           L1             103,518,344        0.9300           111,310,047                6               13
          12           L1              92,968,682        0.9500            97,861,771                2                3
  RANDOM TOTALS:                    4,991,922,994                       5,149,033,834              275           18,939
  CATG D1 EXCEPTION VALUES:             5,197,290                           4,571,760
  CATG L1 EXCEPTION VALUES:            88,534,689                          98,127,311
 TOTAL TEST VALUES (4):             5,085,654,973                       5,251,732,905
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               262,586,645
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:               4,989,146,260 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                5,085,654,973 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:               5,514,319,550 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                5,954,995,488 (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