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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:40:12                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              231/Upton                                                 VRSN:      W
                                                        231-901/McCamey ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,265,499        0.9024             4,726,838               8              365         .048253326
      2           A                4,266,633        0.7465             5,715,516               9              189         .043107978
      3           A                4,283,216        0.9094             4,709,936               9              114         .007636146
      4           A                4,210,036        0.9600             4,385,454               9               59         .023548517
      5           G1             151,822,492        0.9923           153,000,597               6               68         .000100111
      6           G1             153,102,300        1.0235           149,587,005               5               19         .000429312
      7           G1             156,941,530        1.0159           154,485,215               4                9         .000194789
  RANDOM TOTALS:                 478,891,706                         476,610,561              50              823
  CATG D1 EXCEPTION VALUES:          802,760                           1,702,790
  CATG G1 EXCEPTION VALUES:      379,659,030                         371,879,595
 TOTAL TEST VALUES (4):          859,353,496                         850,192,946
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           42,509,647
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            807,683,299 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             859,353,496 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            892,702,593 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             985,023,692 (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