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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:23                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              198/Robertson                                             VRSN:      W
                                                        198-902/Calvert ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                3,932,771        0.8934             4,402,027               15              250
           2           A                3,960,203        0.9294             4,261,032               15              122
           3           A                3,969,548        0.9645             4,115,654               16               72
           4           A                3,890,008        1.1555             3,366,515               15               37
           5           D3               7,565,140        0.9566             7,908,363               20              961
           6           F1                 670,092        1.1009               608,677                6               44
           7           F1                 704,963        0.9670               729,021                5               14
           8           F1                 702,190        0.7355               954,711                4                6
  RANDOM TOTALS:                       25,394,915                          26,346,000               96            1,506
  CATG J  EXCEPTION VALUES:            10,252,921                          10,405,724
  CATG D1 EXCEPTION VALUES:             5,892,270                           6,607,310
  CATG F1 EXCEPTION VALUES:               640,970                             669,545
  CATG G1 EXCEPTION VALUES:             1,322,842                           1,423,620
 TOTAL TEST VALUES (4):                43,503,918                          45,452,199
 MARGIN OF ERROR PERCENT:               5.0000001
 MARGIN OF ERROR VALUE:                 2,272,610
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  43,179,589 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   43,503,918 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  47,724,809 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   59,401,185 (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