School and Appraisal Districts' Property Value Study 2003 Preliminary Report



Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     14:31                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        101-921-101 Tomball

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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        406,189,782     .9704     418,579,742       50
  2      A  - Single-family Residences        406,873,316     .9975     407,893,049       50
  3      A  - Single-family Residences        404,822,715     .9961     406,407,705       50
  4      A  - Single-family Residences        405,164,482     .9842     411,668,850       37
  5      F  - Commercial Real                  74,206,427    1.0162      73,023,447        7
  6      F  - Commercial Real                  74,423,950    1.0107      73,636,044        7
  7      F  - Commercial Real                  75,698,013     .9579      79,024,964        6
  8      F  - Commercial Real                  70,974,656     .9827      72,224,134        3
  9      L  - Commercial Personal              37,800,310     .8854      42,692,918        7
 10      L  - Commercial Personal              38,054,429     .9457      40,239,430        8
 11      L  - Commercial Personal              37,562,072     .9360      40,130,419        8
 12      L  - Commercial Personal              37,482,660     .9365      40,024,196        4

Random Totals:                              2,069,252,812             2,105,544,898      237
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      13,266,550                13,138,193
 Other Exception Values:                                0                         0
Exception Totals(3):                           13,266,550                13,138,193
Test Values(4):                             2,082,519,362             2,118,683,091

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    105,934,155
Confidence Interval Values:
  State Lower Limit:                                    2,012,748,936  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                     2,082,519,362  (Within Confidence Interval Limits)
  State Upper Limit:                                    2,224,617,246  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     2,757,715,019  (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.