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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:51                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        222-901-222 Terrell County

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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      D  - Rural Real                        6,901,623     .9951       6,935,607       15
  2      G  - Oil, Gas, Minerals              224,316,710     .9305     241,071,155       37

Random Totals:                                231,218,333               248,006,762       52
 Cat J Exception Values:                       14,264,466                14,852,522
 Cat D1 Exception Values:                      13,076,323                15,929,379
 Other Exception Values:                                0                         0
Exception Totals(3):                           27,340,789                30,781,901
Test Values(4):                               258,559,122               278,788,663

Margin of Error Percent:                                    6.2035593
Margin of Error Value:                                     17,294,820
Confidence Interval Values:
  Local Test Value:                                       258,559,122  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                      261,493,843  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                      296,083,483  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       315,482,550  (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.