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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     21:44                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        245-902-245 Lyford CISD

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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          9,401,609     .9220      10,196,973        8
  2      A  - Single-family Residences          9,409,519     .9936       9,470,128        7
  3      A  - Single-family Residences          9,377,877     .8850      10,596,471        8
  4      A  - Single-family Residences          9,381,832     .9930       9,447,968        8
  5      D  - Rural Real                       15,450,237     .9457      16,337,355       12
  6      G  - Oil, Gas, Minerals               10,015,020     .9243      10,835,248        9

Random Totals:                                 63,036,094                66,884,143       52
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      49,298,858                50,501,090
 Other Exception Values:                        3,364,180                 3,886,651
Exception Totals(3):                           52,663,038                54,387,741
Test Values(4):                               115,699,132               121,271,884

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      6,063,594
Confidence Interval Values:
  State Lower Limit:                                      115,208,290  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       115,699,132  (Within Confidence Interval Limits)
  State Upper Limit:                                      127,335,478  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       131,015,205  (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.