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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     18:18                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        072-904-072 Bluff Dale

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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          1,597,603    1.1777       1,356,545        6
  2      A  - Single-family Residences          1,681,832     .9665       1,740,126        9
  3      A  - Single-family Residences          1,631,843     .8643       1,888,052        7
  4      C  - Vacant Lots                       7,577,558    1.0283       7,369,015       67
  5      C  - Vacant Lots                       4,020,402    1.1015       3,649,934        9
  6      C  - Vacant Lots                       8,712,871    1.0204       8,538,682       47
  7      C  - Vacant Lots                       2,469,847    1.1912       2,073,411        8
  8      D  - Rural Real                       14,109,670     .9970      14,152,126       14

Random Totals:                                 41,801,626                40,767,891      167
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       3,669,730                 3,448,579
 Other Exception Values:                          718,540                   779,283
Exception Totals(3):                            4,388,270                 4,227,862
Test Values(4):                                46,189,896                44,995,753

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      2,249,788
Confidence Interval Values:
  State Lower Limit:                                       42,745,965  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                        46,189,896  (Within Confidence Interval Limits)
  State Upper Limit:                                       47,245,541  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                        60,523,871  (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.