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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
                                                        072-902-072 Dublin

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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         12,417,117    1.0742      11,559,409       16
  2      A  - Single-family Residences         12,411,895     .9851      12,599,629       15
  3      A  - Single-family Residences         12,375,344    1.0188      12,146,981       18
  4      A  - Single-family Residences         12,411,895    1.0063      12,334,190       16
  5      D  - Rural Real                       75,242,930    1.0282      73,179,274       21
  6      F  - Commercial Real                   3,171,871     .9932       3,193,587       14
  7      F  - Commercial Real                   3,259,011     .8657       3,764,596        9
  8      F  - Commercial Real                   3,331,403     .7569       4,401,378       12
  9      L  - Commercial Personal               2,961,737    1.0665       2,777,062        7
 10      L  - Commercial Personal               2,959,263    1.0222       2,894,994        6
 11      L  - Commercial Personal               2,969,160    1.0468       2,836,416        5

Random Totals:                                143,511,626               141,687,516      139
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      18,455,620                16,207,302
 Other Exception Values:                        5,607,365                 5,683,610
Exception Totals(3):                           24,062,985                21,890,912
Test Values(4):                               167,574,611               163,578,428

Margin of Error Percent:                                   10.0802998
Margin of Error Value:                                     16,489,196
Confidence Interval Values:
  State Lower Limit:                                      147,089,232  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       167,574,611  (Within Confidence Interval Limits)
  State Upper Limit:                                      180,067,624  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       166,527,667  (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.