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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:35                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        205-906-205 Sinton

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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         25,359,086    1.0646      23,820,295       21
  2      A  - Single-family Residences         25,359,086     .9394      26,994,982       18
  3      A  - Single-family Residences         25,369,768     .9246      27,438,642       19
  4      A  - Single-family Residences         25,380,450     .9619      26,385,747       17
  5      D  - Rural Real                       26,800,993     .9871      27,151,244       22
  6      F  - Commercial Real                   4,148,171     .8691       4,772,950        8
  7      F  - Commercial Real                   4,127,273     .8979       4,596,584        8
  8      F  - Commercial Real                   4,360,630     .9466       4,606,624        7
  9      F  - Commercial Real                   3,913,073     .9159       4,272,380        4
 10      G  - Oil, Gas, Minerals                5,385,420    1.0235       5,261,768       11

Random Totals:                                150,203,950               155,301,216      135
 Cat J Exception Values:                       23,334,374                24,310,229
 Cat D1 Exception Values:                      28,751,831                27,224,390
 Other Exception Values:                       10,621,710                 9,853,868
Exception Totals(3):                           62,707,915                61,388,487
Test Values(4):                               212,911,865               216,689,703

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     10,834,485
Confidence Interval Values:
  State Lower Limit:                                      205,855,218  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       212,911,865  (Within Confidence Interval Limits)
  State Upper Limit:                                      227,524,188  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       224,613,612  (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.