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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:09                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        085-902-085 Post

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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          7,836,600     .9751       8,036,714        7
  2      A  - Single-family Residences          7,810,258    1.0379       7,525,058        7
  3      A  - Single-family Residences          7,862,941    1.0346       7,599,982        7
  4      A  - Single-family Residences          7,780,624    1.0004       7,777,513        7
  5      D  - Rural Real                       16,282,660    1.0256      15,876,229       11
  6      G  - Oil, Gas, Minerals              227,595,020    1.0405     218,736,204       12

Random Totals:                                275,168,103               265,551,700       51
 Cat J Exception Values:                       14,555,723                14,999,070
 Cat D1 Exception Values:                      19,380,030                21,545,504
 Other Exception Values:                                0                         0
Exception Totals(3):                           33,935,753                36,544,574
Test Values(4):                               309,103,856               302,096,274

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     15,104,814
Confidence Interval Values:
  State Lower Limit:                                      286,991,460  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       309,103,856  (Within Confidence Interval Limits)
  State Upper Limit:                                      317,201,088  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       330,593,128  (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.