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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     17:25                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        031-901-031 Brownsville

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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        502,862,293     .9315     539,841,431       49
  2      A  - Single-family Residences        502,862,293     .9722     517,241,610       58
  3      A  - Single-family Residences        502,862,293     .9667     520,184,435       59
  4      A  - Single-family Residences        502,862,293     .9621     522,671,545       58
  5      C  - Vacant Lots                      52,542,231    1.0426      50,395,387       10
  6      C  - Vacant Lots                      49,865,470     .9061      55,033,076       14
  7      C  - Vacant Lots                      51,290,198     .9888      51,871,155        9
  8      C  - Vacant Lots                      51,139,090     .9861      51,859,943        7
  9      F  - Commercial Real                 180,870,045     .9560     189,194,608       10
 10      F  - Commercial Real                 181,708,112     .9926     183,062,777        8
 11      F  - Commercial Real                 181,631,924     .9947     182,599,702        8
 12      F  - Commercial Real                 179,498,663     .9647     186,066,822        6
 13      L  - Commercial Personal              68,983,851     .9048      76,242,099        9
 14      L  - Commercial Personal              69,419,355    1.0279      67,535,125        7
 15      L  - Commercial Personal              70,000,027     .9878      70,864,575        8
 16      L  - Commercial Personal              67,416,036     .9914      68,000,843        5

Random Totals:                              3,215,814,174             3,332,665,133      325
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       5,566,566                 5,662,369
 Other Exception Values:                                0                         0
Exception Totals(3):                            5,566,566                 5,662,369
Test Values(4):                             3,221,380,740             3,338,327,502

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    166,916,375
Confidence Interval Values:
  State Lower Limit:                                    3,171,411,127  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                     3,221,380,740  (Within Confidence Interval Limits)
  State Upper Limit:                                    3,505,243,877  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     3,333,164,194  (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.