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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     18:14                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        070-911-070 Red Oak

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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        172,745,593     .9637     179,252,457       18
  2      A  - Single-family Residences        172,600,184    1.0305     167,491,688       14
  3      A  - Single-family Residences        172,672,888    1.0424     165,649,355       13
  4      A  - Single-family Residences        172,672,888    1.0270     168,133,289       15

Random Totals:                                690,691,553               680,526,789       60
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       1,273,570                 1,354,653
 Other Exception Values:                                0                         0
Exception Totals(3):                            1,273,570                 1,354,653
Test Values(4):                               691,965,123               681,881,442

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     34,094,072
Confidence Interval Values:
  State Lower Limit:                                      647,787,370  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       691,965,123  (Within Confidence Interval Limits)
  State Upper Limit:                                      715,975,514  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       784,894,613  (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.