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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:45:11                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              063/Dickens                                               VRSN:      W
                                                        063-903/Spur ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                3,158,096        0.9717             3,250,073               8              310         .020902568
      2           A                3,136,229        0.9723             3,225,577               9              163         .007492257
      3           A                3,179,423        1.0564             3,009,677               7               98         .008221718
      4           A                3,108,096        1.0563             2,942,437               7               57         .015345202
      5           D3              11,295,110        0.9954            11,347,308              23            2,423         .008137265
      6           G1              22,324,155        1.0814            20,643,753               6               32         .009451153
      7           G1              23,338,879        0.9855            23,682,272               5               13         .027936312
      8           G1              20,440,940        0.9624            21,239,547               3                5         .002485879
      9           G1              21,880,532        1.0277            21,290,777               2                3         .011157742
  RANDOM TOTALS:                 111,861,460                         110,631,421              70            3,104
  CATG D1 EXCEPTION VALUES:       20,620,030                          22,893,365
 TOTAL TEST VALUES (4):          132,481,490                         133,524,786
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            6,676,239
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            126,848,547 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             132,481,490 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            140,201,025 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             157,772,437 (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