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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     17:20                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        249-902-249 Boyd

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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         14,087,608     .9884      14,252,942        7
  2      A  - Single-family Residences         14,039,487     .9837      14,272,123        7
  3      A  - Single-family Residences         14,093,623     .9431      14,943,933        9
  4      A  - Single-family Residences         14,953,798    1.0771      13,883,389        9
  5      D  - Rural Real                       80,129,640     .9955      80,491,853       39
  6      G  - Oil, Gas, Minerals              101,960,540    1.0404      98,001,288       12

Random Totals:                                239,264,696               235,845,528       83
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       2,417,210                 2,377,228
 Other Exception Values:                        1,188,040                 1,151,859
Exception Totals(3):                            3,605,250                 3,529,087
Test Values(4):                               242,869,946               239,374,615

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     11,968,731
Confidence Interval Values:
  State Lower Limit:                                      227,405,884  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       242,869,946  (Within Confidence Interval Limits)
  State Upper Limit:                                      251,343,346  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       264,749,767  (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.