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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     19:54                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        147-903-147 Mexia

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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         28,152,911     .9131      30,832,232       23
  2      A  - Single-family Residences         28,164,759     .9283      30,340,148       13
  3      A  - Single-family Residences         28,141,062     .9091      30,954,859       13
  4      A  - Single-family Residences         28,105,515     .9319      30,159,368       14
  5      D  - Rural Real                       42,865,258     .9388      45,659,627       44
  6      F  - Commercial Real                  11,758,542    1.0854      10,833,372       12
  7      F  - Commercial Real                  11,783,131     .9535      12,357,767        9
  8      F  - Commercial Real                  14,664,982     .9972      14,706,159        7
  9      G  - Oil, Gas, Minerals               16,684,328     .9712      17,179,086       12
 10      L  - Commercial Personal               4,742,619     .9778       4,850,296        7
 11      L  - Commercial Personal               4,867,565    1.0629       4,579,514        6
 12      L  - Commercial Personal               5,162,649     .9748       5,296,111        4

Random Totals:                                225,093,321               237,748,539      164
 Cat J Exception Values:                       18,834,885                19,495,615
 Cat D1 Exception Values:                       4,371,230                 4,478,585
 Other Exception Values:                       18,592,041                18,342,522
Exception Totals(3):                           41,798,156                42,316,722
Test Values(4):                               266,891,477               280,065,261

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     14,003,263
Confidence Interval Values:
  State Lower Limit:                                      266,061,998  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       266,891,477  (Within Confidence Interval Limits)
  State Upper Limit:                                      294,068,524  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       255,861,682  (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.