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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:53:41                                       2004 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
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               47,826,378        0.9806            48,772,566               12              679
           2           C               24,625,400        0.9989            24,652,518               57            1,663
           3           D3             230,317,516        0.9314           247,280,992               36            5,383
           4           F1              22,693,852        1.0009            22,673,446               13              178
  RANDOM TOTALS:                      325,463,146                         343,379,522              118            7,903
  CATG D1 EXCEPTION VALUES:            13,146,930                          13,944,348
 TOTAL TEST VALUES (4):               338,610,076                         357,323,870
 MARGIN OF ERROR PERCENT:               7.5540545
 MARGIN OF ERROR VALUE:                26,992,440
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 330,331,430 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  338,610,076 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 384,316,310 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  325,593,921 (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