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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     21:24                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        228-903-228 Trinity

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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         27,421,118     .8882      30,872,684       15
  2      A  - Single-family Residences         27,421,118     .8875      30,897,034       17
  3      A  - Single-family Residences         27,398,046     .8269      33,133,445       13
  4      A  - Single-family Residences         27,351,902     .7950      34,404,908       15
  5      C  - Vacant Lots                      37,907,039    1.0784      35,151,186       29
  6      D  - Rural Real                       16,876,484     .9285      18,176,073       17
  7      F  - Commercial Real                   4,051,950    1.0019       4,044,266       10
  8      F  - Commercial Real                   3,993,055    1.0605       3,765,257        8
  9      F  - Commercial Real                   4,109,161    1.0228       4,017,561        6
 10      F  - Commercial Real                   3,829,833    1.0537       3,634,652        4
 11      L  - Commercial Personal               2,987,481    1.1111       2,688,760        7
 12      L  - Commercial Personal               3,185,245    1.0741       2,965,501        8
 13      L  - Commercial Personal               2,902,195    1.1449       2,534,890        4

Random Totals:                                189,434,627               206,286,217      153
 Cat J Exception Values:                        7,328,251                 7,844,893
 Cat D1 Exception Values:                      16,652,706                14,144,967
 Other Exception Values:                        2,141,149                 2,122,720
Exception Totals(3):                           26,122,106                24,112,580
Test Values(4):                               215,556,733               230,398,797

Margin of Error Percent:                                    5.1471172
Margin of Error Value:                                     11,858,896
Confidence Interval Values:
  Local Test Value:                                       215,556,733  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                      218,539,901  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                      242,257,693  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       195,304,128  (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.