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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     19:23                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        117-901-117 Borger

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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         60,317,065     .9646      62,530,650        9
  2      A  - Single-family Residences         60,291,668     .9594      62,843,098       11
  3      A  - Single-family Residences         60,393,255     .9887      61,083,499        9
  4      A  - Single-family Residences         60,240,875     .9979      60,367,647       10
  5      F  - Commercial Real                  12,567,441     .9874      12,727,811        7
  6      F  - Commercial Real                  12,678,610     .9985      12,697,656        7
  7      F  - Commercial Real                  14,054,994     .9635      14,587,435        5
  8      G  - Oil, Gas, Minerals               25,400,460    1.1843      21,447,657       12
  9      L  - Commercial Personal              17,919,965    1.0160      17,637,761        7
 10      L  - Commercial Personal              18,161,007    1.0248      17,721,513        7
 11      L  - Commercial Personal              18,228,800     .9874      18,461,414        6
 12      L  - Commercial Personal              17,257,100     .9996      17,264,006        4

Random Totals:                                377,511,240               379,370,147       94
 Cat J Exception Values:                       19,521,604                18,777,749
 Cat D1 Exception Values:                         764,860                   837,380
 Other Exception Values:                        8,012,120                 7,941,760
Exception Totals(3):                           28,298,584                27,556,889
Test Values(4):                               405,809,824               406,927,036

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     20,346,352
Confidence Interval Values:
  State Lower Limit:                                      386,580,684  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       405,809,824  (Within Confidence Interval Limits)
  State Upper Limit:                                      427,273,388  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       419,406,805  (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.