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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     17:41                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        043-914-043 Wylie

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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        257,730,162     .9956     258,869,186      104
  2      A  - Single-family Residences        257,621,690    1.0007     257,441,481      106
  3      A  - Single-family Residences        257,513,217    1.0039     256,512,817      107
  4      A  - Single-family Residences        257,730,162    1.0025     257,087,443      106
  5      D  - Rural Real                       56,816,668    1.0092      56,298,720       14
  6      F  - Commercial Real                  31,498,031     .9517      33,096,597        8
  7      F  - Commercial Real                  31,419,121     .9094      34,549,286        7
  8      F  - Commercial Real                  32,431,793     .8632      37,571,586        6

Random Totals:                              1,182,760,844             1,191,427,116      458
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       1,077,175                   909,575
 Other Exception Values:                       25,825,492                25,128,732
Exception Totals(3):                           26,902,667                26,038,307
Test Values(4):                             1,209,663,511             1,217,465,423

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     60,873,271
Confidence Interval Values:
  State Lower Limit:                                    1,156,592,152  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                     1,209,663,511  (Within Confidence Interval Limits)
  State Upper Limit:                                    1,278,338,694  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     1,520,597,949  (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.