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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     18:35                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        089-903-089 Nixon-Smiley CISD

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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          6,949,987    1.0659       6,520,299       14
  2      A  - Single-family Residences          6,941,215    1.0558       6,574,365       13
  3      A  - Single-family Residences          6,947,063     .9714       7,151,599       13
  4      A  - Single-family Residences          6,941,215     .9983       6,953,035       13
  5      D  - Rural Real                       40,667,170     .9844      41,311,631       25
  6      G  - Oil, Gas, Minerals                5,571,390    1.0473       5,319,765       28

Random Totals:                                 74,018,040                73,830,694      106
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      15,863,660                15,196,283
 Other Exception Values:                        2,657,350                 2,242,984
Exception Totals(3):                           18,521,010                17,439,267
Test Values(4):                                92,539,050                91,269,961

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                      4,563,498
Confidence Interval Values:
  State Lower Limit:                                       86,706,463  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                        92,539,050  (Within Confidence Interval Limits)
  State Upper Limit:                                       95,833,459  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       108,518,855  (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.