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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     21:24                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        228-904-228 Centerville

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                                                              (1)                         (2)
  (1)                  (1)                        (1)       Stratum         (1)         Sample
Stratum              Category                 Local Value    Ratio      State Value      Size
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  1      A  - Single-family Residences            965,761     .8523       1,133,123       10
  2      A  - Single-family Residences            945,450     .9692         975,495        9
  3      A  - Single-family Residences            982,886     .9113       1,078,554        8
  4      A  - Single-family Residences            888,898     .8141       1,091,878        6
  5      D  - Rural Real                        6,051,361     .9707       6,234,018       22

Random Totals:                                  9,834,356                10,513,068       55
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      10,408,677                 8,378,062
 Other Exception Values:                                0                         0
Exception Totals(3):                           10,408,677                 8,378,062
Test Values(4):                                20,243,033                18,891,130

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                        944,557
Confidence Interval Values:
  State Lower Limit:                                       17,946,573  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                       19,835,687  (State Test Value Plus Margin of Error Value)
  Local Test Value:                                        20,243,033  (Outside of ConfidenceInterval Limits)
Value Assigned (5):                                        19,957,755  (See ISD Summary Worksheet)


Sources:

(1) See Stratified Ratio Detail Report VAL7214.
(2) Number of parcels sampled by staff.
(3) Exception value includes, if tested, D1, the J sample, and any parcels in A,B,C,D,F1,G or L1 marked as exception properties.
(4) Unstudied categories and sub-categories were not included in the test values.
(5) Includes local value of unstudied property categories and sub-categories.