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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     15:11                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        130-901-130 Boerne

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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        382,755,795     .8782     435,841,261       48
  2      A  - Single-family Residences        382,594,702     .8831     433,240,519       21
  3      A  - Single-family Residences        382,755,795     .9614     398,123,357       13
  4      A  - Single-family Residences        382,433,610     .9622     397,457,504       15
  5      C  - Vacant Lots                      36,384,914     .6524      55,770,868       20
  6      C  - Vacant Lots                      36,384,914     .8491      42,851,153       14
  7      C  - Vacant Lots                      36,430,855    1.1037      33,007,932       15
  8      C  - Vacant Lots                      36,293,033    1.0200      35,581,405        7
  9      D  - Rural Real                      166,348,020     .8003     207,857,079       17
 10      F  - Commercial Real                  47,190,740    1.0475      45,050,826       10
 11      F  - Commercial Real                  47,587,134     .9782      48,647,653        7
 12      F  - Commercial Real                  47,686,233     .9390      50,784,061        6
 13      F  - Commercial Real                  45,922,278     .9594      47,865,622        6

Random Totals:                              2,030,768,023             2,232,079,240      199
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       6,464,900                 5,925,724
 Other Exception Values:                                0                         0
Exception Totals(3):                            6,464,900                 5,925,724
Test Values(4):                             2,037,232,923             2,238,004,964

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    111,900,248
Confidence Interval Values:
  Local Test Value:                                     2,037,232,923  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                    2,126,104,716  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                    2,349,905,212  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     2,099,330,694  (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.