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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:54:47                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              006/Armstrong                                             VRSN:      W
                                                        006-902/Claude ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               24,720,970        0.8187            30,195,395              23              596         .046368507
      2           D3              11,050,280        0.6017            18,365,099              20            2,300         .465285911
      3           L1               6,330,730        1.0314             6,137,997              10               70         .009176645
  RANDOM TOTALS:                  42,101,980                          54,698,491              53            2,966
  CATG J  EXCEPTION VALUES:        9,272,922                           9,191,392
  CATG D1 EXCEPTION VALUES:       34,167,180                          29,457,239
 TOTAL TEST VALUES (4):           85,542,082                          93,347,122
 MARGIN OF ERROR PERCENT:          6.6464234
 MARGIN OF ERROR VALUE:            6,204,245
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              85,542,082 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             87,142,877 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             99,551,367 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              83,879,042 (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