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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:54                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              073/Falls                                                 VRSN:      W
                                                        073-904/Westphalia ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                  805,015        0.7693             1,046,425              14               33         .014148553
      2           A                  789,099        1.0210               772,869              11               17         .029915077
      3           A                  811,650        0.9883               821,259               8               12         .017699234
      4           D3               4,834,720        0.9947             4,860,481              21              451         .023051256
  RANDOM TOTALS:                   7,240,484                           7,501,034              54              513
  CATG J  EXCEPTION VALUES:          196,890                             342,741
  CATG D1 EXCEPTION VALUES:        1,996,090                           2,077,621
  CATG A  EXCEPTION VALUES:          629,150                             594,646
 TOTAL TEST VALUES (4):           10,062,614                          10,516,042
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:              525,802
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:              9,990,240 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              10,062,614 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             11,041,844 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              10,599,240 (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