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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:14                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        179-901-179 Perryton

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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         29,012,629     .8354      34,729,027       22
  2      A  - Single-family Residences         29,012,629     .8818      32,901,598       20
  3      A  - Single-family Residences         28,975,997     .9034      32,074,382       14
  4      A  - Single-family Residences         28,975,997     .8564      33,834,653       13
  5      D  - Rural Real                       25,557,675     .8217      31,103,414       16
  6      F  - Commercial Real                   8,188,548     .9419       8,693,649        7
  7      F  - Commercial Real                   8,181,682    1.0347       7,907,299        7
  8      F  - Commercial Real                   8,243,482     .9530       8,650,034        6
  9      F  - Commercial Real                   7,999,714     .9437       8,476,967        5
 10      G  - Oil, Gas, Minerals              165,274,125    1.1480     143,967,008       41
 11      L  - Commercial Personal              10,418,648     .8079      12,895,962        8
 12      L  - Commercial Personal              10,493,223    1.0281      10,206,423        6
 13      L  - Commercial Personal              10,695,016    1.0241      10,443,332        9
 14      L  - Commercial Personal              10,063,317    1.0156       9,908,741        5

Random Totals:                                381,092,682               385,792,489      179
 Cat J Exception Values:                       11,805,732                11,694,990
 Cat D1 Exception Values:                      42,051,409                50,612,873
 Other Exception Values:                                0                         0
Exception Totals(3):                           53,857,141                62,307,863
Test Values(4):                               434,949,823               448,100,352

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     22,405,018
Confidence Interval Values:
  State Lower Limit:                                      425,695,334  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       434,949,823  (Within Confidence Interval Limits)
  State Upper Limit:                                      470,505,370  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       487,562,784  (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.