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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:01:37                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              072/Erath                                                 VRSN:      W
                                                        072-908/Huckabay ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                  985,200        1.0004               984,806                7               31
           2           A                  956,170        1.0154               941,668                9               17
           3           A                1,010,119        0.9453             1,068,570                9               13
           4           D3              37,319,350        0.9065            41,168,616               21            2,285
           5           G1               4,602,730        1.0233             4,497,928               17              105
  RANDOM TOTALS:                       44,873,569                          48,661,588               63            2,451
  CATG J  EXCEPTION VALUES:             3,768,243                           4,424,222
  CATG D1 EXCEPTION VALUES:             9,580,550                           8,541,840
  CATG A  EXCEPTION VALUES:             1,048,070                           1,016,036
 TOTAL TEST VALUES (4):                59,270,432                          62,643,686
 MARGIN OF ERROR PERCENT:               9.8890733
 MARGIN OF ERROR VALUE:                 6,194,880
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                  56,448,806 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                   59,270,432 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                  68,838,566 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   60,608,462 (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