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Date:   6/27/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     20:49                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        199-902-199 Royse City

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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         53,582,795     .8552      62,655,279       13
  2      A  - Single-family Residences         53,650,479     .9686      55,389,716       36
  3      A  - Single-family Residences         53,582,795     .9979      53,695,556       71
  4      A  - Single-family Residences         53,537,673    1.0128      52,861,052       25
  5      C  - Vacant Lots                       8,986,072     .8929      10,063,918        7
  6      C  - Vacant Lots                       7,629,815    1.0101       7,553,524        7
  7      C  - Vacant Lots                       8,641,791     .9553       9,046,154        7
  8      C  - Vacant Lots                       7,761,963     .9779       7,937,379       44
  9      D  - Rural Real                       73,931,280     .8538      86,590,864       17
 10      F  - Commercial Real                   5,380,000    1.0136       5,307,814        7
 11      F  - Commercial Real                   5,317,076     .9589       5,544,974        6
 12      F  - Commercial Real                   5,786,759    1.0848       5,334,402        6
 13      F  - Commercial Real                   4,887,845    1.0027       4,874,683        3

Random Totals:                                342,676,343               366,855,315      249
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       3,802,710                 3,406,368
 Other Exception Values:                                0                         0
Exception Totals(3):                            3,802,710                 3,406,368
Test Values(4):                               346,479,053               370,261,683

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     18,513,084
Confidence Interval Values:
  Local Test Value:                                       346,479,053  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                      351,748,599  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                      388,774,767  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                       386,478,757  (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.