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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:56:31                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              016/Blanco                                                VRSN:      W
                                                        016-902/Blanco ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               11,242,237        0.9919            11,334,043               7              223         .011009142
      2           A               11,153,298        0.9118            12,232,176               7              145         .013473680
      3           A               11,211,653        0.9504            11,796,773               7              111         .010745488
      4           A               11,109,310        0.9575            11,602,413               6               73         .006214772
      5           C                5,890,631        1.0255             5,744,155               8              601         .009829701
      6           C                5,872,466        0.9934             5,911,482              42              285         .021023972
      7           C                5,911,675        1.0008             5,906,949              50              165         .001031139
      8           C                5,774,851        1.0005             5,771,965              27               97         .000940363
      9           D3             248,800,000        0.9037           275,312,604              21            4,912         .015351849
     10           F1               5,841,171        0.9596             6,087,089               8               68         .049867440
     11           F1               5,752,616        1.0999             5,230,126               7               33         .025992369
     12           F1               5,702,861        1.0133             5,628,008               6               21         .059534169
     13           F1               5,589,189        0.9341             5,983,502               5                9         .002901100
  RANDOM TOTALS:                 339,851,958                         368,541,285             201            6,743
  CATG D1 EXCEPTION VALUES:       13,865,960                          14,226,989
 TOTAL TEST VALUES (4):          353,717,918                         382,768,274
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           19,138,414
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             353,717,918 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            363,629,860 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            401,906,688 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             347,459,676 (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