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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:01:53                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              138/Knox                                                  VRSN:      W
                                                        138-904/Benjamin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                  508,006        1.0251               495,567               9               50         .005887999
      2           A                  514,761        0.9894               520,276               7               30         .012456179
      3           A                  494,450        1.0019               493,512               6               21         .000846765
      4           A                  496,192        0.9517               521,374               7               13         .004414982
      5           D3               1,415,570        1.0505             1,347,520              14            1,043         .057356488
      6           G1               1,823,980        1.1299             1,614,284               6               15         .133829044
  RANDOM TOTALS:                   5,252,959                           4,992,533              49            1,172
  CATG J  EXCEPTION VALUES:        1,541,211                           1,500,173
  CATG D1 EXCEPTION VALUES:       15,335,410                          16,793,178
 TOTAL TEST VALUES (4):           22,129,580                          23,285,884
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            1,164,294
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             22,121,590 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              22,129,580 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             24,450,178 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              23,936,800 (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