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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:22:56                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              229/Tyler                                                 VRSN:      P
                                                        229-906/Chester ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               14,895,817        0.9772            15,243,366               21              477
           2           D3              11,662,969        0.8379            13,919,285               20            2,415
  RANDOM TOTALS:                       26,558,786                          29,162,651               41            2,892
  CATG J  EXCEPTION VALUES:             3,174,454                           3,728,709
  CATG D1 EXCEPTION VALUES:            20,570,533                          14,534,107
 TOTAL TEST VALUES (4):                50,303,773                          47,425,467
 MARGIN OF ERROR PERCENT:               7.7679488
 MARGIN OF ERROR VALUE:                 3,683,986
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  43,741,481 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   50,303,773 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  51,109,453 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   46,043,890 (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