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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:22                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        187-901-187 Big Sandy

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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          4,775,964    1.0428       4,579,942        6
  2      A  - Single-family Residences          4,779,974     .9605       4,976,548        5
  3      A  - Single-family Residences          4,767,944    1.1077       4,304,364        9
  4      A  - Single-family Residences          4,725,839    1.0902       4,334,837        8
  5      D  - Rural Real                        8,950,738    1.2628       7,088,009       10
  6      G  - Oil, Gas, Minerals              171,935,660     .9909     173,514,643       12

Random Totals:                                199,936,119               198,798,343       50
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      29,813,747                26,953,951
 Other Exception Values:                                0                         0
Exception Totals(3):                           29,813,747                26,953,951
Test Values(4):                               229,749,866               225,752,294

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     11,287,615
Confidence Interval Values:
  State Lower Limit:                                      214,464,679  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       229,749,866  (Within Confidence Interval Limits)
  State Upper Limit:                                      237,039,909  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       254,764,581  (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.