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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:13:12                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              101/Harris                                                VRSN:      W
                                                        101-913/Humble ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A            1,511,530,267        1.0083         1,499,087,838              58           12,954         .004533327
      2           A            1,512,126,600        1.0282         1,470,654,153              55            9,618         .004237206
      3           A            1,507,645,954        1.0180         1,480,988,167              58            7,276         .007224157
      4           A            1,508,272,365        0.9706         1,553,958,752              56            4,199         .011330033
      5           F1             198,995,614        0.8382           237,408,272              13              404         .072849754
      6           F1             198,810,797        0.8842           224,848,221               9              122         .014662425
      7           F1             199,179,875        1.0269           193,962,289               6               48         .001186171
      8           F1             198,244,178        0.7895           251,100,922               6               14         .021576193
      9           L1              74,772,046        0.8897            84,041,864               7            1,260         .020432844
     10           L1              74,807,637        0.9292            80,507,573               8              220         .011402997
     11           L1              74,548,142        0.9413            79,197,006               6               61         .002706531
     12           L1              74,294,517        0.9036            82,220,581               5               20         .004757967
  RANDOM TOTALS:               7,133,227,992                       7,237,975,638             287           36,196
  CATG D1 EXCEPTION VALUES:       10,160,207                          10,144,394
 TOTAL TEST VALUES (4):        7,143,388,199                       7,248,120,032
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          362,406,002
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          6,885,714,030 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           7,143,388,199 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          7,610,526,034 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           7,431,835,351 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES