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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:21:12                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              220/Tarrant                                               VRSN:      P
                                                        220-901/Arlington ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A            2,309,811,887        1.0110         2,284,680,403              101           25,391
           2           A            2,296,126,630        1.0183         2,254,862,644              100           19,032
           3           A            2,304,207,639        1.0228         2,252,842,823              100           14,391
           4           A            2,300,143,356        1.0124         2,271,970,917               99            8,789
           5           B              357,107,346        0.8061           443,006,260               24            2,385
           6           B              358,473,986        0.9474           378,376,595                7               85
           7           B              357,588,127        0.8657           413,062,408                6               47
           8           B              354,088,718        0.9445           374,895,413                8               20
           9           F1             949,661,332        0.8024         1,183,526,087               29            1,589
          10           F1             951,348,623        0.8651         1,099,697,865               17              464
          11           F1             950,436,936        0.9310         1,020,877,482                7              180
          12           F1             945,390,701        0.8822         1,071,628,543                7               66
          13           L1             563,248,105        1.0865           518,405,987                8            2,592
          14           L1             564,496,596        1.0503           537,462,245                5              371
          15           L1             568,249,787        1.0202           556,998,419                9              117
          16           L1             556,207,853        1.0975           506,795,310                7               30
  RANDOM TOTALS:                   16,686,587,622                      17,169,089,401              534           75,549
  CATG D1 EXCEPTION VALUES:               117,464                             151,643
 TOTAL TEST VALUES (4):            16,686,705,086                      17,169,241,044
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               858,462,052
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:              16,310,778,992 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:               16,686,705,086 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:              18,027,703,096 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               17,568,985,252 (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