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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     13:31                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        050-910-050 Copperas Cove

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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        143,258,759     .9955     143,906,338       43
  2      A  - Single-family Residences        143,258,759    1.0012     143,087,055       33
  3      A  - Single-family Residences        143,319,079    1.0435     137,344,589       28
  4      A  - Single-family Residences        143,198,440     .9502     150,703,473       34
  5      B  - Multi-family Residences          13,339,948    1.1501      11,598,946       10
  6      B  - Multi-family Residences          13,255,908     .9942      13,333,241       11
  7      B  - Multi-family Residences          13,311,934     .9954      13,373,452        8
  8      B  - Multi-family Residences          13,334,345     .8321      16,024,931        6
  9      F  - Commercial Real                  14,833,236     .9774      15,176,219       10
 10      F  - Commercial Real                  15,289,547     .8528      17,928,643        8
 11      F  - Commercial Real                  15,145,778     .7565      20,020,857        6

Random Totals:                                671,545,733               682,497,744      197
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       1,855,990                 1,627,913
 Other Exception Values:                       13,380,958                20,025,223
Exception Totals(3):                           15,236,948                21,653,136
Test Values(4):                               686,782,681               704,150,880

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     35,207,544
Confidence Interval Values:
  State Lower Limit:                                      668,943,336  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                       686,782,681  (Within Confidence Interval Limits)
  State Upper Limit:                                      739,358,424  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       693,732,080  (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.