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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     18:07                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        063-903-063 Spur

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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          2,913,296    1.1045       2,637,660       10
  2      A  - Single-family Residences          2,918,192     .9219       3,165,411       10
  3      A  - Single-family Residences          2,904,728     .8522       3,408,505        9
  4      A  - Single-family Residences          2,894,935     .9552       3,030,711        9
  5      D  - Rural Real                        8,771,190     .8887       9,869,686       20
  6      G  - Oil, Gas, Minerals               45,044,629     .9841      45,772,410       38

Random Totals:                                 65,446,970                67,884,383       96
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      21,693,600                20,259,556
 Other Exception Values:                       15,121,671                15,196,222
Exception Totals(3):                           36,815,271                35,455,778
Test Values(4):                               102,262,241               103,340,161

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      5,167,008
Confidence Interval Values:
  State Lower Limit:                                       98,173,153  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       102,262,241  (Within Confidence Interval Limits)
  State Upper Limit:                                      108,507,169  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       107,375,410  (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.