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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     16:05                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        170-902-170 Conroe

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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      1,751,406,082     .9708   1,804,085,375       15
  2      A  - Single-family Residences      1,750,668,958     .9490   1,844,751,273       16
  3      A  - Single-family Residences      1,749,931,834     .9895   1,768,501,096       16
  4      A  - Single-family Residences      1,750,668,958    1.0249   1,708,136,363       16
  5      B  - Multi-family Residences          65,207,156    1.0236      63,703,748        6
  6      B  - Multi-family Residences          64,194,953    1.0363      61,946,302        6
  7      B  - Multi-family Residences          64,780,965    1.0042      64,510,023        5
  8      B  - Multi-family Residences          59,187,214     .9665      61,238,711        4
  9      C  - Vacant Lots                     136,705,923    1.0080     135,620,955       11
 10      C  - Vacant Lots                     132,290,576    1.0199     129,709,360       10
 11      C  - Vacant Lots                     136,083,246    1.0329     131,748,713       10
 12      C  - Vacant Lots                     132,403,790    1.0045     131,810,642        7
 13      F  - Commercial Real                 439,696,812     .9743     451,295,096        8
 14      F  - Commercial Real                 440,805,757     .9323     472,815,357        7
 15      F  - Commercial Real                 439,327,163     .9716     452,168,756        7
 16      F  - Commercial Real                 436,185,151    1.0791     404,211,983        5
 17      L  - Commercial Personal             238,198,647     .9917     240,192,243        7
 18      L  - Commercial Personal             239,101,294     .9468     252,536,221        7
 19      L  - Commercial Personal             239,703,059    1.0043     238,676,749        7
 20      L  - Commercial Personal             235,791,587     .9834     239,771,799        6

Random Totals:                             10,502,339,125            10,657,430,765      176
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                      56,508,893                55,890,508
 Other Exception Values:                                0                         0
Exception Totals(3):                           56,508,893                55,890,508
Test Values(4):                            10,558,848,018            10,713,321,273

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                    535,666,064
Confidence Interval Values:
  State Lower Limit:                                   10,177,655,209  (State Test Value Minus Margin of Error Value)
  Local Test Value:                                    10,558,848,018  (Within Confidence Interval Limits)
  State Upper Limit:                                   11,248,987,337  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                    10,878,390,263  (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.