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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:37:25                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              025/Brown                                                 VRSN:      W
                                                        025-904/Blanket ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,198,611        0.9566             1,252,991               6               82         .000405413
      2           A                1,185,977        0.9764             1,214,643               9               41         .002061536
      3           A                1,183,385        0.9650             1,226,306               7               27         .000239045
      4           A                1,166,735        0.9724             1,199,851               9               16         .001685907
      5           D3              16,907,883        0.9881            17,111,510              28            1,152         .029884389
      6           L1               3,272,360        0.9650             3,391,047              11               46         .000495085
  RANDOM TOTALS:                  24,914,951                          25,396,348              70            1,364
  CATG J  EXCEPTION VALUES:        2,707,610                           2,770,233
  CATG D1 EXCEPTION VALUES:        4,152,970                           3,931,577
 TOTAL TEST VALUES (4):           31,775,531                          32,098,158
 MARGIN OF ERROR PERCENT:          5.0000003
 MARGIN OF ERROR VALUE:            1,604,908
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             30,493,250 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              31,775,531 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             33,703,066 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              27,944,373 (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