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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:54:50                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              026/Burleson                                              VRSN:      P
                                                        026-902/Somerville ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               11,676,253        0.8085            14,441,871               10              661
           2           A               11,641,481        0.7663            15,191,806               10              354
           3           A               11,683,403        0.8497            13,750,033               10              234
           4           A               11,640,508        0.9903            11,754,527               11              145
           5           C                2,761,952        1.2462             2,216,299               11            1,516
           6           C                3,676,913        1.1084             3,317,316                7            1,332
           7           C                1,854,922        1.1510             1,611,574                9              512
           8           C                2,757,719        1.1461             2,406,177                8              192
           9           D3              30,399,384        1.1175            27,203,028               21            5,831
          10           G1              16,834,660        0.9813            17,155,467               16              124
  RANDOM TOTALS:                      104,927,195                         109,048,098              113           10,901
  CATG J  EXCEPTION VALUES:             8,379,750                           8,480,828
  CATG D1 EXCEPTION VALUES:             2,996,850                           2,601,866
 TOTAL TEST VALUES (4):               116,303,795                         120,130,792
 MARGIN OF ERROR PERCENT:               5.0575909
 MARGIN OF ERROR VALUE:                 6,075,724
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 114,055,068 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  116,303,795 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 126,206,516 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  138,487,883 (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