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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     13:39                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        057-922-057 Coppell

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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        652,757,292     .9886     660,284,536       50
  2      A  - Single-family Residences        652,757,292     .9980     654,065,423       50
  3      A  - Single-family Residences        651,933,104    1.0016     650,891,677       50
  4      A  - Single-family Residences        652,482,563     .9920     657,744,519       50
  5      F  - Commercial Real                 387,185,848     .8796     440,184,002       11
  6      F  - Commercial Real                 391,093,527     .9354     418,102,979       10
  7      F  - Commercial Real                 395,815,306     .9690     408,478,128        8
  8      F  - Commercial Real                 373,346,152    1.0877     343,243,681        7
  9      L  - Commercial Personal             256,612,508     .9502     270,061,574        7
 10      L  - Commercial Personal             261,684,328     .9932     263,475,965        8
 11      L  - Commercial Personal             267,295,703    1.0925     244,664,259        8
 12      L  - Commercial Personal             239,454,649    1.0238     233,888,112        4

Random Totals:                              5,182,418,272             5,245,084,855      263
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                         199,501                   170,680
 Other Exception Values:                                0                         0
Exception Totals(3):                              199,501                   170,680
Test Values(4):                             5,182,617,773             5,245,255,535

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    262,262,777
Confidence Interval Values:
  State Lower Limit:                                    4,982,992,758  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                     5,182,617,773  (Within Confidence Interval Limits)
  State Upper Limit:                                    5,507,518,312  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     5,653,461,880  (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.