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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:50                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        220-901-220 Arlington

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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      2,222,913,761     .9759   2,277,808,957      100
  2      A  - Single-family Residences      2,209,848,776     .9894   2,233,524,132      102
  3      A  - Single-family Residences      2,216,381,269     .9840   2,252,419,989      102
  4      A  - Single-family Residences      2,214,514,842    1.0257   2,159,027,827      102
  5      B  - Multi-family Residences         382,621,532     .9774     391,468,725       60
  6      B  - Multi-family Residences         390,834,368     .9635     405,640,237        7
  7      B  - Multi-family Residences         379,078,740    1.0037     377,681,319        7
  8      B  - Multi-family Residences         377,307,344    1.0048     375,504,920        7
  9      F  - Commercial Real                 935,948,230    1.0065     929,903,855        9
 10      F  - Commercial Real                 933,588,697     .9364     996,997,754        9
 11      F  - Commercial Real                 933,981,952     .8739   1,068,751,518        7
 12      F  - Commercial Real                 932,802,186    1.0138     920,104,741        7
 13      L  - Commercial Personal             515,503,491    1.1206     460,024,532        7
 14      L  - Commercial Personal             516,588,305    1.0548     489,750,005        7
 15      L  - Commercial Personal             521,578,448     .9971     523,095,425        7
 16      L  - Commercial Personal             507,692,832    1.0195     497,982,179        6

Random Totals:                             16,191,184,773            16,359,686,115      546
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                         121,766                   146,202
 Other Exception Values:                                0                         0
Exception Totals(3):                              121,766                   146,202
Test Values(4):                            16,191,306,539            16,359,832,317

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    817,991,616
Confidence Interval Values:
  State Lower Limit:                                   15,541,840,701  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                    16,191,306,539  (Within Confidence Interval Limits)
  State Upper Limit:                                   17,177,823,933  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                    17,508,379,406  (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.