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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:14:20                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              186/Pecos                                                 VRSN:      W
                                                        186-903/Iraan-Sheffield ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                3,845,252        0.7215             5,329,525              10              193         .027163715
      2           A                3,837,571        0.7459             5,144,887              11              121         .004992441
      3           A                3,863,119        0.7714             5,007,932              11               78         .005945949
      4           A                3,785,650        0.8379             4,518,021              10               44         .002056150
      5           G1              13,562,950        1.0128            13,391,538               5               14         .001948333
      6           G1              14,190,580        1.0620            13,362,128               4                9         .012801103
      7           G1              12,548,310        0.9720            12,909,784               3                5         .001616974
      8           G1              12,139,198        1.0050            12,078,804               2                3         .000104936
  RANDOM TOTALS:                  67,772,630                          71,742,619              56              467
  CATG J  EXCEPTION VALUES:       14,303,292                          13,162,952
  CATG D1 EXCEPTION VALUES:        3,949,914                           6,364,033
  CATG G1 EXCEPTION VALUES:      659,521,896                         647,793,255
 TOTAL TEST VALUES (4):          745,547,732                         739,062,859
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           36,953,143
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            702,109,716 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             745,547,732 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            776,016,002 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             984,003,383 (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