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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:17                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        182-902-182 Graford

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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         54,641,814     .9973      54,789,746       16
  2      A  - Single-family Residences         54,664,831     .8795      62,154,441       14
  3      A  - Single-family Residences         54,941,032     .9436      58,224,917       16
  4      A  - Single-family Residences         54,457,680     .9731      55,963,087       17
  5      C  - Vacant Lots                       6,468,542     .9896       6,536,522        8
  6      C  - Vacant Lots                       7,422,604    1.0524       7,053,025        8
  7      C  - Vacant Lots                       6,512,156    1.0319       6,310,840        8
  8      C  - Vacant Lots                       5,506,302     .9652       5,704,830        6
  9      D  - Rural Real                       12,086,410    1.2968       9,320,180       10
 10      G  - Oil, Gas, Minerals               22,653,150    1.2548      18,053,196       12

Random Totals:                                279,354,521               284,110,784      115
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       6,591,250                 7,061,071
 Other Exception Values:                                0                         0
Exception Totals(3):                            6,591,250                 7,061,071
Test Values(4):                               285,945,771               291,171,855

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     14,558,593
Confidence Interval Values:
  State Lower Limit:                                      276,613,262  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       285,945,771  (Within Confidence Interval Limits)
  State Upper Limit:                                      305,730,448  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       313,728,735  (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.