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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:15                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        091-908-091 Van Alstyne

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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         41,665,481    1.0444      39,894,179       13
  2      A  - Single-family Residences         41,718,111    1.0111      41,260,124       27
  3      A  - Single-family Residences         41,647,938     .9796      42,515,249       19
  4      A  - Single-family Residences         41,630,394    1.0740      38,762,006       13
  5      D  - Rural Real                       47,332,691    1.1113      42,592,181       21

Random Totals:                                213,994,615               205,023,739       93
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       4,726,712                 3,948,636
 Other Exception Values:                                0                         0
Exception Totals(3):                            4,726,712                 3,948,636
Test Values(4):                               218,721,327               208,972,375

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     10,448,619
Confidence Interval Values:
  State Lower Limit:                                      198,523,756  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       218,721,327  (Within Confidence Interval Limits)
  State Upper Limit:                                      219,420,994  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       231,054,798  (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.