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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:18                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        093-904-093 Navasota

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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         44,480,773     .9306      47,797,951       16
  2      A  - Single-family Residences         44,555,719     .9498      46,910,633       18
  3      A  - Single-family Residences         44,555,719     .9440      47,198,855       24
  4      A  - Single-family Residences         44,405,826    1.0118      43,887,948       15
  5      D  - Rural Real                      133,028,315     .9586     138,773,540       32
  6      F  - Commercial Real                  10,553,645     .9289      11,361,444        7
  7      F  - Commercial Real                  10,677,079    1.0941       9,758,778        8
  8      F  - Commercial Real                  10,249,467    1.0427       9,829,737        6
  9      F  - Commercial Real                  10,430,211     .9708      10,743,934        5
 10      G  - Oil, Gas, Minerals               55,868,590    1.0115      55,233,406       12

Random Totals:                                408,805,344               421,496,226      143
 Cat J Exception Values:                       40,555,947                43,045,286
 Cat D1 Exception Values:                      20,306,860                23,125,804
 Other Exception Values:                                0                         0
Exception Totals(3):                           60,862,807                66,171,090
Test Values(4):                               469,668,151               487,667,316

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     24,383,366
Confidence Interval Values:
  State Lower Limit:                                      463,283,950  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       469,668,151  (Within Confidence Interval Limits)
  State Upper Limit:                                      512,050,682  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       673,150,431  (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.