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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:21:32                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              230/Upshur                                                VRSN:      W
                                                        230-901/Big Sandy ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                9,988,717        1.0549             9,468,876              14              797         .105852425
      2           A               10,031,330        0.9886            10,147,006              14              222         .059800008
      3           A                9,932,929        0.9264            10,722,074              12              136         .059067572
      4           A                9,981,558        0.9557            10,444,238              12               83         .013175009
      5           D3              43,818,237        0.8768            49,975,179              15            2,905         .046834352
      6           F1               2,389,178        0.8958             2,667,089               7              106         .057318310
      7           F1               2,448,018        0.6495             3,769,081               6               31         .370149608
      8           F1               4,663,563        0.8079             5,772,451               5                9         .018118419
      9           G1               9,608,555        0.9856             9,748,940               8               15         .000592167
     10           L1               1,799,510        1.1424             1,575,201               7               67         .360466584
     11           L1               1,930,858        0.9178             2,103,789               5               13         .020424777
     12           L1               1,698,695        0.8792             1,932,092               3                4         .023937339
  RANDOM TOTALS:                 108,291,148                         118,326,016             108            4,388
  CATG J  EXCEPTION VALUES:        9,831,008                           9,335,502
  CATG D1 EXCEPTION VALUES:        5,686,006                           5,677,268
  CATG L1 EXCEPTION VALUES:        4,659,776                           4,755,563
 TOTAL TEST VALUES (4):          128,467,938                         138,094,349
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            6,904,717
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             128,467,938 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            131,189,632 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            144,999,066 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             119,807,985 (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