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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:55:27                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              109/Hill                                                  VRSN:      W
                                                        109-901/Abbott ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                3,595,738        1.0421             3,450,473               6               82         .007272332
      2           A                3,570,793        0.9517             3,752,015               6               49         .027663525
      3           A                3,641,266        0.9406             3,871,216              10               37         .013026665
      4           A                3,510,090        1.0470             3,352,521               7               22         .007149082
      5           D3              15,268,250        1.0444            14,619,159              16            1,066         .032463146
  RANDOM TOTALS:                  29,586,137                          29,045,384              45            1,256
  CATG J  EXCEPTION VALUES:        3,805,422                           3,768,824
  CATG D1 EXCEPTION VALUES:        7,393,052                           7,394,968
 TOTAL TEST VALUES (4):           40,784,611                          40,209,176
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            2,010,459
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             38,198,717 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              40,784,611 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             42,219,635 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              40,228,773 (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