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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:31                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        101-902-101 Aldine

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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        836,355,181     .8830     947,174,610       50
  2      A  - Single-family Residences        837,057,115     .9362     894,100,742       50
  3      A  - Single-family Residences        827,580,997     .9835     841,465,172       50
  4      A  - Single-family Residences        833,547,442     .9850     846,241,058       50
  5      B  - Multi-family Residences         113,777,476     .8420     135,127,644        8
  6      B  - Multi-family Residences         113,299,821    1.0200     111,078,256        7
  7      B  - Multi-family Residences         116,930,000     .9089     128,650,017        8
  8      B  - Multi-family Residences         109,239,751     .9770     111,811,414        6
  9      F  - Commercial Real                 538,640,124     .8968     600,624,581        7
 10      F  - Commercial Real                 541,582,276     .8283     653,847,973        7
 11      F  - Commercial Real                 547,692,900     .9466     578,589,584        8
 12      F  - Commercial Real                 522,345,129     .9734     536,619,200        6
 13      L  - Commercial Personal             374,500,271     .8322     450,012,342        7
 14      L  - Commercial Personal             378,181,257    1.0392     363,915,759        7
 15      L  - Commercial Personal             743,399,043     .9825     756,640,247        7

Random Totals:                              7,434,128,783             7,955,898,599      278
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      10,621,820                10,594,771
 Other Exception Values:                                0                         0
Exception Totals(3):                           10,621,820                10,594,771
Test Values(4):                             7,444,750,603             7,966,493,370

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    398,324,669
Confidence Interval Values:
  Local Test Value:                                     7,444,750,603  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                    7,568,168,701  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                    8,364,818,039  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     8,744,544,855  (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.