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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:02:51                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              048/Concho                                                VRSN:      W
                                                        048-903/Paint Rock ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,145,187        1.0085             4,110,250               8              139         .004160309
      2           A                4,156,999        0.9976             4,167,000               6               59         .007316478
      3           A                4,173,764        1.0058             4,149,696               9               29         .014465754
      4           A                3,977,685        1.0705             3,715,726               4               10         .000873448
      5           C                1,246,309        0.8331             1,495,990               7              170         .014028709
      6           C                1,238,613        0.8948             1,384,234               6               76         .000430858
      7           C                1,228,590        0.8933             1,375,339               7               40         .003800727
      8           C                1,226,474        0.9004             1,362,143               5               17         .004129985
      9           D3               8,019,650        0.8385             9,564,281              20            1,696         .172072009
  RANDOM TOTALS:                  29,413,271                          31,324,659              72            2,236
  CATG J  EXCEPTION VALUES:        3,741,401                           3,596,296
  CATG D1 EXCEPTION VALUES:       12,978,410                          12,473,203
 TOTAL TEST VALUES (4):           46,133,082                          47,394,158
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:            2,369,708
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             45,024,450 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              46,133,082 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             49,763,866 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              57,946,925 (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