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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:15:13                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              166/Milam                                                 VRSN:      W
                                                        166-904/Rockdale ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               34,752,089        0.9567            36,324,960               20            1,043
           2           A               34,630,674        0.9609            36,039,831               16              515
           3           A               34,712,974        0.9442            36,764,429               15              327
           4           A               34,593,019        1.0019            34,527,417               16              206
           5           D3              62,832,493        0.9209            68,229,442               20            5,077
           6           F1               6,800,277        1.0065             6,756,361                8              159
           7           F1               7,028,871        1.0020             7,014,841                8               51
           8           F1               6,692,344        0.8981             7,451,669                8               16
           9           F1               6,753,824        1.0940             6,173,514                3                5
  RANDOM TOTALS:                      228,796,565                         239,282,464              114            7,399
  CATG J  EXCEPTION VALUES:            24,289,362                          24,657,382
  CATG D1 EXCEPTION VALUES:            11,336,320                          11,197,673
 TOTAL TEST VALUES (4):               264,422,247                         275,137,519
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                13,756,876
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 261,380,643 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  264,422,247 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 288,894,395 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  596,138,787 (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