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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:37:51                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              220/Tarrant                                               VRSN:      W
                                                        220-908/Mansfield ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A            1,110,821,616        0.9916         1,120,231,561              48            8,998         .003060660
      2           A            1,110,864,194        1.0056         1,104,677,997              52            6,899         .003280063
      3           A            1,111,782,880        1.0070         1,104,054,499              48            5,498         .002085131
      4           A            1,109,657,930        1.0055         1,103,588,195              51            3,486         .003356167
      5           F1             144,921,996        0.9488           152,742,407               9              368         .007133515
      6           F1             145,889,920        0.9648           151,212,604               7              125         .023680177
      7           F1             143,315,033        1.0312           138,978,892               6               52         .011416057
      8           F1             144,256,066        0.9388           153,660,062               5               16         .011211064
      9           L1              67,264,436        1.0978            61,272,031               7              486         .030744510
     10           L1              68,131,738        1.1445            59,529,697               7               89         .043454695
     11           L1              67,957,049        1.0390            65,406,207               7               29         .001671449
  RANDOM TOTALS:               5,224,862,858                       5,215,354,152             247           26,046
  CATG D1 EXCEPTION VALUES:        1,730,332                           2,094,390
  CATG L1 EXCEPTION VALUES:       65,473,996                          63,569,542
 TOTAL TEST VALUES (4):        5,292,067,186                       5,281,018,084
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          264,050,904
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          5,016,967,180 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           5,292,067,186 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          5,545,068,988 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           6,094,651,568 (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