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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     19:10                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        108-903-108 Edcouch-Elsa

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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         29,294,172     .9490      30,868,464       11
  2      A  - Single-family Residences         29,294,172     .9276      31,580,608       11
  3      A  - Single-family Residences         29,331,175     .9966      29,431,241       11
  4      A  - Single-family Residences         29,269,503     .9731      30,078,618       11
  5      C  - Vacant Lots                       3,249,773     .9571       3,395,437        7
  6      C  - Vacant Lots                       3,338,789     .9721       3,434,615        7
  7      C  - Vacant Lots                       3,223,753     .9977       3,231,185        9
  8      C  - Vacant Lots                       3,199,102    1.0022       3,192,079        7
  9      D  - Rural Real                        8,920,491     .9235       9,659,438       12
 10      F  - Commercial Real                   4,290,767     .9605       4,467,222        8
 11      F  - Commercial Real                   4,244,264     .8919       4,758,677        7
 12      F  - Commercial Real                   4,278,247     .9302       4,599,276        6
 13      F  - Commercial Real                   4,197,761     .9575       4,384,085        4

Random Totals:                                156,131,969               163,080,945      111
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       4,316,682                 4,096,949
 Other Exception Values:                                0                         0
Exception Totals(3):                            4,316,682                 4,096,949
Test Values(4):                               160,448,651               167,177,894

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      8,358,895
Confidence Interval Values:
  State Lower Limit:                                      158,818,999  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       160,448,651  (Within Confidence Interval Limits)
  State Upper Limit:                                      175,536,789  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       146,170,861  (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.