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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:05:38                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              062/Dewitt                                                VRSN:      W
                                                        062-904/Yorktown ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                7,722,085        1.0796             7,152,728              11              351         .052012858
      2           A                7,733,714        0.9583             8,070,243               8              217         .018370516
      3           A                7,719,004        1.0200             7,567,651               9              162         .077385771
      4           A                7,702,084        0.9858             7,813,029               9              100         .006515132
      5           D3              24,459,240        0.9807            24,940,593              31            3,484         .042208339
      6           F1               1,475,998        0.9569             1,542,479               6               55         .010665698
      7           F1               1,525,052        0.9648             1,580,692               5               22         .000566966
      8           F1               1,787,375        0.9322             1,917,373               4                8         .002776936
      9           G1               6,420,580        0.9950             6,452,844               6               11         .001323890
     10           G1               9,315,740        1.0175             9,155,518               3                4         .029394542
  RANDOM TOTALS:                  75,860,872                          76,193,150              92            4,414
  CATG J  EXCEPTION VALUES:        5,180,146                           5,744,142
  CATG D1 EXCEPTION VALUES:       11,350,350                           8,882,034
  CATG F1 EXCEPTION VALUES:        1,080,840                           1,159,412
  CATG G1 EXCEPTION VALUES:        9,716,170                          10,406,149
 TOTAL TEST VALUES (4):          103,188,378                         102,384,887
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            5,119,244
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             97,265,643 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             103,188,378 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            107,504,131 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             106,219,641 (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