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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:35:44                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              018/Bosque                                                VRSN:      W
                                                        018-907/Kopperl ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                8,800,933        1.0403             8,459,995              10              295         .018973898
      2           A                8,792,505        0.9454             9,300,301               9              166         .014001214
      3           A                8,826,724        0.9781             9,024,357               9              112         .004189275
      4           A                8,699,013        1.0383             8,378,131               9               70         .008444976
      5           C                  957,240        1.0018               955,520              10              162         .008277013
      6           C                  933,295        0.9797               952,633               9               85         .001338569
      7           C                  964,382        1.0013               963,130               8               52         .002273881
      8           C                  908,528        1.0074               901,854              10               31         .007055660
      9           D3              30,492,100        1.0262            29,713,604              21              936         .025522654
  RANDOM TOTALS:                  69,374,720                          68,649,525              95            1,909
  CATG J  EXCEPTION VALUES:        3,137,390                           3,178,073
  CATG D1 EXCEPTION VALUES:        4,354,580                           3,758,224
 TOTAL TEST VALUES (4):           76,866,690                          75,585,822
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            3,779,291
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             71,806,531 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              76,866,690 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             79,365,113 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              80,618,095 (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