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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:03                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        169-902-169 Nocona

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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         17,665,810     .9789      18,046,593       14
  2      A  - Single-family Residences         17,799,811    1.0459      17,018,655       12
  3      A  - Single-family Residences         17,636,032     .9987      17,658,989       12
  4      A  - Single-family Residences         17,621,143    1.1215      15,712,120       14
  5      D  - Rural Real                       27,243,220     .9846      27,669,328       13
  6      F  - Commercial Real                   3,031,108     .9866       3,072,277        8
  7      F  - Commercial Real                   3,047,609     .9776       3,117,440        6
  8      F  - Commercial Real                   3,262,122    1.0290       3,170,187        7

Random Totals:                                107,306,855               105,465,589       86
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       6,070,310                 5,346,258
 Other Exception Values:                        2,615,930                 2,421,401
Exception Totals(3):                            8,686,240                 7,767,659
Test Values(4):                               115,993,095               113,233,248

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      5,661,662
Confidence Interval Values:
  State Lower Limit:                                      107,571,586  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       115,993,095  (Within Confidence Interval Limits)
  State Upper Limit:                                      118,894,910  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       119,276,351  (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.