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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     17:58                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        057-910-057 Grand Prairie

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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        540,900,591     .9694     557,974,614       50
  2      A  - Single-family Residences        540,900,591     .9646     560,751,183       50
  3      A  - Single-family Residences        540,217,636     .9820     550,119,792       50
  4      A  - Single-family Residences        540,672,940    1.0149     532,735,186       48
  5      B  - Multi-family Residences          56,605,898     .9966      56,799,015       32
  6      B  - Multi-family Residences          60,536,863     .9594      63,098,669        6
  7      B  - Multi-family Residences          56,296,185     .9769      57,627,377        4
  8      B  - Multi-family Residences          52,317,572     .9579      54,616,945        3
  9      F  - Commercial Real                 132,400,216     .7038     188,121,932        7
 10      F  - Commercial Real                 131,677,932     .9873     133,371,753        7
 11      F  - Commercial Real                 139,289,695     .9970     139,708,821        6
 12      F  - Commercial Real                 124,510,652    1.0304     120,837,201        5
 13      L  - Commercial Personal              76,888,697    1.0828      71,009,140        7
 14      L  - Commercial Personal              77,276,697     .9084      85,069,019        7
 15      L  - Commercial Personal              79,701,698     .8373      95,188,938        6
 16      L  - Commercial Personal              73,299,695     .9988      73,387,760        6

Random Totals:                              3,223,493,558             3,340,417,345      294
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                         189,570                   174,355
 Other Exception Values:                                0                         0
Exception Totals(3):                              189,570                   174,355
Test Values(4):                             3,223,683,128             3,340,591,700

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    167,029,585
Confidence Interval Values:
  State Lower Limit:                                    3,173,562,115  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                     3,223,683,128  (Within Confidence Interval Limits)
  State Upper Limit:                                    3,507,621,285  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     3,480,288,390  (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.