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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:55:18                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              026/Burleson                                              VRSN:      W
                                                        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               11,634,234        0.8085            14,389,900               10              661
           2           A               11,599,588        0.7663            15,137,137               10              354
           3           A               11,641,358        0.8497            13,700,551               10              234
           4           A               11,598,618        0.9903            11,712,227               11              145
           5           C                2,755,181        1.2462             2,210,866               11            1,516
           6           C                3,667,900        1.1084             3,309,184                7            1,332
           7           C                1,850,375        1.1510             1,607,624                9              512
           8           C                2,750,959        1.1461             2,400,278                8              192
           9           D3              30,259,084        1.1175            27,077,480               21            5,215
          10           G1              16,834,660        0.9813            17,155,467               16              124
  RANDOM TOTALS:                      104,591,957                         108,700,714              113           10,285
  CATG J  EXCEPTION VALUES:             8,379,750                           8,480,828
  CATG D1 EXCEPTION VALUES:             2,996,690                           2,603,600
 TOTAL TEST VALUES (4):               115,968,397                         119,785,142
 MARGIN OF ERROR PERCENT:               5.0547229
 MARGIN OF ERROR VALUE:                 6,054,807
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 113,730,335 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  115,968,397 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 125,839,949 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  138,199,168 (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