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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:26:40                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              254/Zavala                                                VRSN:      W
                                                        254-902/LaPryor ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A                2,188,393        0.9822             2,228,052                7              195
           2           A                2,186,516        1.0075             2,170,239                7              102
           3           A                2,173,384        1.1052             1,966,507                7               71
           4           A                2,190,062        1.0217             2,143,547                6               41
           5           D3               5,386,842        0.9432             5,711,240               15              817
           6           G1               3,099,982        1.0088             3,072,940                9               38
  RANDOM TOTALS:                       17,225,179                          17,292,525               51            1,264
  CATG J  EXCEPTION VALUES:             4,677,364                           4,723,051
  CATG D1 EXCEPTION VALUES:            10,513,761                          12,578,894
  CATG G1 EXCEPTION VALUES:             1,792,931                           1,675,726
 TOTAL TEST VALUES (4):                34,209,235                          36,270,196
 MARGIN OF ERROR PERCENT:               5.0000006
 MARGIN OF ERROR VALUE:                 1,813,510
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                   34,209,235 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:                  34,456,686 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:                  38,083,706 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                   34,009,899 (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