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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     20:15                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        168-903-168 Westbrook

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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          3,727,017     .9590       3,886,358        7
  2      A  - Single-family Residences          3,728,588    1.0160       3,669,870       10
  3      A  - Single-family Residences          3,750,576    1.0280       3,648,420        8
  4      A  - Single-family Residences          3,706,599    1.0294       3,600,737       10
  5      D  - Rural Real                        3,664,120     .9712       3,772,776       19
  6      G  - Oil, Gas, Minerals               39,110,378    1.0270      38,082,160       12

Random Totals:                                 57,687,278                56,660,321       66
 Cat J Exception Values:                        8,221,637                 8,597,481
 Cat D1 Exception Values:                       8,740,660                10,479,549
 Other Exception Values:                       41,197,922                42,585,507
Exception Totals(3):                           58,160,219                61,662,537
Test Values(4):                               115,847,497               118,322,858

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      5,916,143
Confidence Interval Values:
  State Lower Limit:                                      112,406,715  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       115,847,497  (Within Confidence Interval Limits)
  State Upper Limit:                                      124,239,001  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       120,870,100  (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.