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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     20:19                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        171-901-171 Dumas

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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         62,243,307     .8616      72,241,536       31
  2      A  - Single-family Residences         62,295,722     .9160      68,008,430       30
  3      A  - Single-family Residences         62,269,514     .9252      67,303,841       35
  4      A  - Single-family Residences         62,190,891     .9284      66,987,173       19
  5      D  - Rural Real                       20,443,320     .8275      24,704,918       11
  6      F  - Commercial Real                  13,245,274     .7712      17,174,888        7
  7      F  - Commercial Real                  13,173,168    1.0017      13,150,812        7
  8      F  - Commercial Real                  14,166,009     .9646      14,685,889        6
  9      F  - Commercial Real                  12,135,954     .9690      12,524,204        4
 10      G  - Oil, Gas, Minerals              342,597,760    1.0496     326,407,927       41
 11      L  - Commercial Personal              18,000,324    1.0135      17,760,556        7
 12      L  - Commercial Personal              18,083,484    1.0491      17,237,140        7
 13      L  - Commercial Personal              17,954,964     .9958      18,030,693        5
 14      L  - Commercial Personal              17,788,645    1.0020      17,753,139        5

Random Totals:                                736,588,336               753,971,146      215
 Cat J Exception Values:                       44,619,959                45,234,746
 Cat D1 Exception Values:                      50,378,180                51,390,750
 Other Exception Values:                                0                         0
Exception Totals(3):                           94,998,139                96,625,496
Test Values(4):                               831,586,475               850,596,642

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     42,529,832
Confidence Interval Values:
  State Lower Limit:                                      808,066,810  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       831,586,475  (Within Confidence Interval Limits)
  State Upper Limit:                                      893,126,474  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     1,357,036,036  (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.