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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:14:16                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              186/Pecos                                                 VRSN:      W
                                                        186-902/Fort Stockton ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               28,292,444        0.8777            32,234,754              10            1,410         .214614872
      2           A               28,292,113        0.9540            29,656,303               7              725         .070596869
      3           A               28,274,032        0.9369            30,178,282              12              438         .028635867
      4           A               28,242,343        0.9238            30,571,924              11              262         .019759362
      5           G1             291,376,070        0.9678           301,070,541               7              119         .011982574
      6           G1             289,170,860        1.0171           284,309,173               6               38         .001625023
      7           G1             300,031,690        1.0082           297,591,440               5               21         .000084981
      8           G1             269,458,840        0.9532           282,688,670               4               11         .004954389
  RANDOM TOTALS:               1,263,138,392                       1,288,301,087              62            3,024
  CATG J  EXCEPTION VALUES:       35,421,449                          34,381,618
  CATG D1 EXCEPTION VALUES:       17,632,109                          27,135,232
 TOTAL TEST VALUES (4):        1,316,191,950                       1,349,817,937
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           67,490,897
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,282,327,040 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,316,191,950 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,417,308,834 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,518,424,933 (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