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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:14:41                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              161/McLennan                                              VRSN:      W
                                                        161-922/Robinson ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               59,502,113        0.9185            64,781,832               11              891
           2           A               59,564,560        0.9513            62,613,855               20              638
           3           A               59,575,257        0.9809            60,735,301               25              497
           4           A               59,427,219        1.0580            56,169,394               32              341
           5           D3              43,332,628        0.8476            51,123,912               12            1,699
  RANDOM TOTALS:                      281,401,777                         295,424,294              100            4,066
  CATG J  EXCEPTION VALUES:            10,481,258                          10,862,072
  CATG D1 EXCEPTION VALUES:             5,196,744                           5,354,351
 TOTAL TEST VALUES (4):               297,079,779                         311,640,717
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                15,582,036
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 296,058,681 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  297,079,779 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 327,222,753 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  293,542,100 (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