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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:22                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        098-904-098 Spearman

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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         11,390,882     .9274      12,282,599        7
  2      A  - Single-family Residences         11,434,029    1.0180      11,231,856        7
  3      A  - Single-family Residences         11,366,911     .9703      11,714,842        7
  4      A  - Single-family Residences         11,338,147     .9550      11,872,405        7
  5      D  - Rural Real                        9,556,018     .9701       9,850,549       10
  6      G  - Oil, Gas, Minerals               85,257,212     .9148      93,197,652       41

Random Totals:                                140,343,199               150,149,903       79
 Cat J Exception Values:                        8,815,955                 9,263,418
 Cat D1 Exception Values:                      25,593,139                39,816,949
 Other Exception Values:                                0                         0
Exception Totals(3):                           34,409,094                49,080,367
Test Values(4):                               174,752,293               199,230,270

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      9,961,514
Confidence Interval Values:
  Local Test Value:                                       174,752,293  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                      189,268,756  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                      209,191,784  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       216,789,437  (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.