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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:23                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        099-903-099 Quanah

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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          6,522,655     .9661       6,751,532       14
  2      A  - Single-family Residences          6,478,879     .8866       7,307,556       15
  3      A  - Single-family Residences          6,525,391     .9459       6,898,606       15
  4      A  - Single-family Residences          6,462,463     .8944       7,225,473       15
  5      D  - Rural Real                       12,874,670     .8757      14,702,147       20
  6      G  - Oil, Gas, Minerals               54,440,730    1.0018      54,342,913       26

Random Totals:                                 93,304,788                97,228,227      105
 Cat J Exception Values:                       18,480,760                19,061,237
 Cat D1 Exception Values:                      19,104,350                20,332,396
 Other Exception Values:                                0                         0
Exception Totals(3):                           37,585,110                39,393,633
Test Values(4):                               130,889,898               136,621,860

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      6,831,093
Confidence Interval Values:
  State Lower Limit:                                      129,790,767  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       130,889,898  (Within Confidence Interval Limits)
  State Upper Limit:                                      143,452,953  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       158,462,446  (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.