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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
                                                        098-901-098 Gruver

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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          5,720,038     .9261       6,176,480       10
  2      A  - Single-family Residences          5,712,834    1.0140       5,633,959        7
  3      A  - Single-family Residences          5,736,848     .9407       6,098,488        7
  4      A  - Single-family Residences          5,628,786     .9954       5,654,798        6
  5      D  - Rural Real                       11,041,899     .9850      11,210,050       12
  6      G  - Oil, Gas, Minerals               70,624,441     .9761      72,353,694       52

Random Totals:                                104,464,846               107,127,469       94
 Cat J Exception Values:                        9,000,689                 8,610,652
 Cat D1 Exception Values:                      26,834,137                41,873,034
 Other Exception Values:                                0                         0
Exception Totals(3):                           35,834,826                50,483,686
Test Values(4):                               140,299,672               157,611,155

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      7,880,558
Confidence Interval Values:
  Local Test Value:                                       140,299,672  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                      149,730,597  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                      165,491,713  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       189,828,593  (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.