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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:18                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        183-904-183 Gary

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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          4,990,315     .9212       5,417,190        7
  2      A  - Single-family Residences          5,005,048     .9841       5,085,914        7
  3      A  - Single-family Residences          5,026,095     .9686       5,189,031        7
  4      A  - Single-family Residences          4,967,163     .9913       5,010,757        6
  5      D  - Rural Real                       12,203,810     .8803      13,863,240       10
  6      G  - Oil, Gas, Minerals               50,862,620    1.0557      48,179,047       23

Random Totals:                                 83,055,051                82,745,179       60
 Cat J Exception Values:                        3,087,660                 3,055,086
 Cat D1 Exception Values:                       9,946,850                10,802,613
 Other Exception Values:                                0                         0
Exception Totals(3):                           13,034,510                13,857,699
Test Values(4):                                96,089,561                96,602,878

Margin of Error Percent:                                    5.6792055
Margin of Error Value:                                      5,486,276
Confidence Interval Values:
  State Lower Limit:                                       91,116,602  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                        96,089,561  (Within Confidence Interval Limits)
  State Upper Limit:                                      102,089,154  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                        95,571,934  (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.