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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:36:52                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              212/Smith                                                 VRSN:      W
                                                        212-909/Chapel Hill ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              111,921,280        0.9573           116,913,486              19            2,023         .022821693
      2           A              111,574,412        0.9887           112,849,613              23            1,327         .003244864
      3           A              111,543,320        0.9951           112,092,574              21              910         .002638699
      4           A              111,486,873        0.9982           111,687,911              35              464         .003876808
      5           D3              83,435,970        0.9877            84,475,013              27            5,164         .177567750
      6           F1              13,778,496        1.0007            13,768,858               7              119         .045250133
      7           F1              13,817,558        0.8952            15,435,163               7               42         .022744256
      8           F1              13,783,487        0.9421            14,630,599               6               19         .138330942
      9           F1              13,514,485        0.9455            14,293,480               3                5         .008295520
     10           L1              26,371,438        0.9919            26,586,791               7              133         .023351305
     11           L1              25,781,277        1.0773            23,931,381               5               23         .021844483
     12           L1              28,655,313        1.1865            24,151,128               4                9         .026213366
  RANDOM TOTALS:                 665,663,909                         670,815,997             164           10,238
  CATG D1 EXCEPTION VALUES:       12,106,036                          10,142,634
  CATG L1 EXCEPTION VALUES:       20,500,810                          19,508,118
 TOTAL TEST VALUES (4):          698,270,755                         700,466,749
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           35,023,337
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            665,443,412 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             698,270,755 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            735,490,086 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             766,454,176 (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