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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     17:13                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        243-902-243 Electra

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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          9,246,575    1.1010       8,398,342        7
  2      A  - Single-family Residences          9,184,544    1.0724       8,564,476       10
  3      A  - Single-family Residences          9,203,928     .9510       9,678,158        9
  4      A  - Single-family Residences          9,200,051     .9878       9,313,678        9
  5      D  - Rural Real                        3,117,218     .7466       4,175,218       15
  6      G  - Oil, Gas, Minerals               30,208,030    1.0445      28,921,044       12
  7      L  - Commercial Personal               1,904,923    1.0082       1,889,430        7
  8      L  - Commercial Personal               1,916,749     .9698       1,976,437        5
  9      L  - Commercial Personal               1,833,961     .9833       1,865,108        6
 10      L  - Commercial Personal               1,839,480     .9775       1,881,821        3

Random Totals:                                 77,655,459                76,663,712       83
 Cat J Exception Values:                        7,374,884                 7,263,056
 Cat D1 Exception Values:                      13,217,553                11,161,631
 Other Exception Values:                                0                         0
Exception Totals(3):                           20,592,437                18,424,687
Test Values(4):                                98,247,896                95,088,399

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      4,754,420
Confidence Interval Values:
  State Lower Limit:                                       90,333,979  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                        98,247,896  (Within Confidence Interval Limits)
  State Upper Limit:                                       99,842,819  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       107,434,325  (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.