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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:41:35                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              044/Collingsworth                                         VRSN:      W
                                                        044-902/Wellington ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                7,589,049        0.9332             8,132,286              23              494         .154073697
      2           A                7,570,934        0.9367             8,082,560              15              197         .015673346
      3           A                7,573,002        0.9926             7,629,460              16              129         .013628769
      4           A                7,527,038        0.9533             7,895,770              14               84         .020994394
      5           D3               7,755,060        0.6928            11,193,793              28            2,067         .531136092
      6           F1               1,193,086        0.9632             1,238,669               6               28         .003216756
      7           F1               1,366,748        0.9534             1,433,551               4               11         .004540570
      8           F1                 978,930        0.9423             1,038,873               2                3         .006323978
  RANDOM TOTALS:                  41,553,847                          46,644,962             108            3,013
  CATG J  EXCEPTION VALUES:        2,170,366                           2,180,314
  CATG D1 EXCEPTION VALUES:       24,795,340                          23,787,386
  CATG F1 EXCEPTION VALUES:           51,840                              52,750
 TOTAL TEST VALUES (4):           68,571,393                          72,665,412
 MARGIN OF ERROR PERCENT:          5.0000006
 MARGIN OF ERROR VALUE:            3,633,271
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              68,571,393 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             69,032,141 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             76,298,683 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              66,170,720 (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