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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:18:06                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              187/Polk                                                  VRSN:      P
                                                        187-904/Corrigan-Camden ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               10,125,464        0.8547            11,846,805               19              552
           2           A               10,140,507        0.8896            11,398,951               17              290
           3           A               10,139,752        1.0076            10,063,271               20              175
           4           A               10,086,542        1.0459             9,643,888               18               92
           5           C                3,150,336        0.9388             3,355,705               14            1,159
           6           C                3,274,339        1.0711             3,056,987               14              565
           7           C                2,367,392        1.0586             2,236,342               14              253
           8           C                2,928,589        1.0677             2,742,895               15              193
           9           D3              16,020,767        0.9166            17,478,472               20            2,155
  RANDOM TOTALS:                       68,233,688                          71,823,316              151            5,434
  CATG J  EXCEPTION VALUES:            16,063,708                          17,823,963
  CATG D1 EXCEPTION VALUES:            32,190,040                          31,412,243
 TOTAL TEST VALUES (4):               116,487,436                         121,059,522
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 6,052,976
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 115,006,546 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  116,487,436 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 127,112,498 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  195,426,995 (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