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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:23:33                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              234/Van Zandt                                             VRSN:      P
                                                        234-904/Grand Saline ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               17,384,669        0.8314            20,910,114               15              535
           2           A               17,416,020        0.8821            19,743,816               15              337
           3           A               17,319,924        0.8991            19,263,624               17              239
           4           A               17,313,815        0.9770            17,721,407               15              157
           5           D3              64,438,400        1.0342            62,307,484               22            7,153
           6           F1               2,294,501        0.7535             3,045,124                9               71
           7           F1               2,293,017        0.7937             2,889,022                8               27
           8           F1               2,423,031        0.9047             2,678,270                5               10
  RANDOM TOTALS:                      140,883,377                         148,558,861              106            8,529
  CATG J  EXCEPTION VALUES:            10,760,101                          10,716,381
  CATG D1 EXCEPTION VALUES:             6,126,800                           3,649,113
  CATG F1 EXCEPTION VALUES:             2,149,570                           2,381,025
 TOTAL TEST VALUES (4):               159,919,848                         165,305,380
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                 8,265,269
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 157,040,111 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  159,919,848 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 173,570,649 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  167,924,440 (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