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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     13:31                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        050-904-050 Oglesby

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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          1,260,826     .8944       1,409,689       11
  2      A  - Single-family Residences          1,264,531     .8559       1,477,428        9
  3      A  - Single-family Residences          1,247,593     .8879       1,405,105        9
  4      A  - Single-family Residences          1,256,062     .8648       1,452,431       10
  5      D  - Rural Real                       11,326,272     .9136      12,397,408       14

Random Totals:                                 16,355,284                18,142,061       53
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       4,217,129                 4,449,891
 Other Exception Values:                                0                         0
Exception Totals(3):                            4,217,129                 4,449,891
Test Values(4):                                20,572,413                22,591,952

Margin of Error Percent:                                    6.9783213
Margin of Error Value:                                      1,576,539
Confidence Interval Values:
  Local Test Value:                                        20,572,413  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                       21,015,413  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                       24,168,491  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                        19,759,116  (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.