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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:10:54                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              091/Grayson                                               VRSN:      W
                                                        091-914/Sadler-Southmayd ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               26,378,457        1.0224            25,800,525              19              546         .028825699
      2           A               26,324,219        0.9803            26,853,228              16              255         .035904250
      3           A               26,367,907        1.0035            26,275,941              14              151         .004336180
      4           A               26,308,545        1.0064            26,141,241              11               70         .006784570
      5           D3              47,158,299        1.0748            43,876,348              39            2,676         .045413084
      6           G1              13,261,328        1.0362            12,798,039               6               32         .002904214
      7           G1              13,557,441        1.0405            13,029,737               4                8         .008140642
      8           G1              11,814,370        0.9357            12,626,237               2                3         .049793757
  RANDOM TOTALS:                 191,170,566                         187,401,296             111            3,741
  CATG D1 EXCEPTION VALUES:        8,493,495                           5,913,733
  CATG G1 EXCEPTION VALUES:       25,687,857                          25,354,617
 TOTAL TEST VALUES (4):          225,351,918                         218,669,646
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           10,933,482
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            207,736,164 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             225,351,918 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            229,603,128 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             251,146,902 (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