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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:25                                       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            1,110,830,100        0.9916         1,120,240,117              48            8,998         .003060660
      2           A            1,110,872,678        1.0056         1,104,686,434              52            6,899         .003280063
      3           A            1,111,791,371        1.0070         1,104,062,930              48            5,498         .002085131
      4           A            1,109,666,404        1.0055         1,103,596,623              51            3,486         .003356167
      5           F1             144,580,351        0.9488           152,382,326               9              368         .007133515
      6           F1             145,545,993        0.9648           150,856,129               7              125         .023680177
      7           F1             142,977,176        1.0312           138,651,257               6               52         .011416057
      8           F1             143,915,991        0.9388           153,297,817               5               16         .011211064
      9           L1              66,374,856        1.0978            60,461,702               7              486         .030744510
     10           L1              67,230,689        1.1445            58,742,411               7               89         .043454695
     11           L1              67,058,310        1.0390            64,541,203               7               29         .001671449
  RANDOM TOTALS:               5,220,843,919                       5,211,518,949             247           26,046
  CATG D1 EXCEPTION VALUES:        1,713,424                           2,067,589
  CATG L1 EXCEPTION VALUES:       65,473,996                          63,569,542
 TOTAL TEST VALUES (4):        5,288,031,339                       5,277,156,080
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          263,857,804
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          5,013,298,276 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           5,288,031,339 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          5,541,013,884 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           6,075,371,321 (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