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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     15:50                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        160-904-160 Rochelle

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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            454,503    1.0005         454,276        8
  2      A  - Single-family Residences            448,855     .7767         577,900        7
  3      A  - Single-family Residences            452,244     .8423         536,916        6
  4      A  - Single-family Residences            437,558     .7498         583,566        5
  5      D  - Rural Real                       14,854,120     .7161      20,743,081       10

Random Totals:                                 16,647,280                22,895,739       36
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      10,869,640                11,145,030
 Other Exception Values:                                0                         0
Exception Totals(3):                           10,869,640                11,145,030
Test Values(4):                                27,516,920                34,040,769

Margin of Error Percent:                                   16.8753473
Margin of Error Value:                                      5,744,498
Confidence Interval Values:
  Local Test Value:                                        27,516,920  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                       28,296,271  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                       39,785,267  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                        30,847,676  (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.