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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:14:59                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              163/Medina                                                VRSN:      W
                                                        163-908/Medina Valley ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               82,230,231        0.9775            84,122,998                7            1,822
           2           A               82,159,353        0.9685            84,831,547               10              896
           3           A               82,272,689        0.9534            86,293,989                7              573
           4           A               82,146,070        0.9641            85,204,927                7              361
           5           C               11,156,032        0.9933            11,231,282               10              802
           6           C               11,771,346        0.9893            11,898,662                7              484
           7           C               10,508,220        0.9944            10,567,397               10              315
           8           C               11,152,585        0.9791            11,390,650                8              163
           9           D3              74,050,005        0.9850            75,177,670               10            4,508
          10           F1               8,319,641        0.9779             8,507,660                7               81
          11           F1               8,368,171        0.9853             8,493,018                6               35
          12           F1               8,182,455        0.9742             8,399,153                6               13
          13           F1               8,018,318        0.9703             8,263,751                2                3
  RANDOM TOTALS:                      480,335,116                         494,382,704               97           10,056
  CATG D1 EXCEPTION VALUES:            17,901,620                          17,669,089
  CATG F1 EXCEPTION VALUES:            28,632,270                          28,149,636
 TOTAL TEST VALUES (4):               526,869,006                         540,201,429
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                27,010,071
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 513,191,358 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  526,869,006 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 567,211,500 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  535,784,091 (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