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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:30                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              072/Erath                                                 VRSN:      W
                                                        072-902/Dublin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               14,564,846        1.0576            13,771,602              15              530         .114308790
      2           A               14,557,543        0.9708            14,995,409              18              286         .022121006
      3           A               14,635,241        0.9194            15,918,252              15              196         .009832397
      4           A               14,366,353        0.9844            14,594,020              19              124         .022141841
      5           D3              96,374,090        1.0015            96,229,745              21            3,899         .053094935
      6           F1               3,849,623        0.8749             4,400,072               9               91         .044169749
      7           F1               3,878,155        0.8531             4,545,956              11               33         .088475902
      8           F1               3,752,101        0.7676             4,888,094               6               17         .024683675
      9           F1               3,640,772        0.9575             3,802,373               5                7         .036221829
     10           L1               4,599,145        0.8530             5,391,729               7              105         .016705711
     11           L1               4,672,575        1.0080             4,635,491               6               20         .003877670
     12           L1               9,023,348        1.0341             8,725,798               4               11         .003872039
  RANDOM TOTALS:                 187,913,792                         191,898,541             136            5,319
  CATG J  EXCEPTION VALUES:        9,045,680                           9,546,071
  CATG D1 EXCEPTION VALUES:       18,274,710                          14,956,771
 TOTAL TEST VALUES (4):          215,234,182                         216,401,383
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           10,820,069
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            205,581,314 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             215,234,182 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            227,221,452 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             202,879,064 (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