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DATE: 01/30/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 08:10:18                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              101/Harris                                                VRSN:      W
                                                        101-912/Houston ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A           11,127,377,609        0.9926        11,210,334,081              63          119,856         .006412883
      2           A           11,127,656,187        0.9738        11,427,044,760              65           59,286         .005660467
      3           A           11,119,107,586        0.9645        11,528,364,527              65           31,145         .007566637
      4           A           11,124,536,556        0.9601        11,586,851,949              64           11,693         .004197659
      5           B            1,694,875,822        0.8346         2,030,764,225              54            4,454         .111158409
      6           B            1,691,968,801        0.8886         1,904,083,728               8              330         .038796421
      7           B            1,703,961,033        0.9645         1,766,678,106               8              126         .016896703
      8           B            1,679,956,717        0.9360         1,794,825,552              10               56         .025233186
      9           C              431,427,898        0.8036           536,868,962              26           18,941         .178910209
     10           C              432,399,994        0.8285           521,907,054              24            3,971         .021364797
     11           C              430,846,836        0.7973           540,382,335              15            1,283         .340284735
     12           C              431,005,424        0.7584           568,308,840              18              238         .399351667
     13           D3             330,622,448        0.6723           491,778,147              12              466         .079773501
     14           F1           4,673,560,943        0.6839         6,833,690,515              32            8,783         .245208200
     15           F1           4,675,694,867        0.7128         6,559,616,817              13            1,287         .072983908
     16           F1           4,697,340,781        0.8389         5,599,404,912              19              287         .048158649
     17           F1           4,642,656,160        0.9000         5,158,506,844              11               55         .023497248
     18           L1           2,021,889,580        0.9541         2,119,158,977               8           19,287         .005322299
     19           L1           2,022,239,479        0.8679         2,330,037,423               7            2,502         .023466596
     20           L1           2,021,711,903        0.9924         2,037,194,582               8              597         .001668168
     21           L1           2,020,245,243        0.9560         2,113,227,242               7              110         .003992573
  RANDOM TOTALS:              80,101,081,867                      88,659,029,578             537          284,753
  CATG D1 EXCEPTION VALUES:        1,019,512                             972,075
 TOTAL TEST VALUES (4):       80,102,101,379                      88,660,001,653
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:        4,433,000,083
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:          80,102,101,379 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:         84,227,001,570 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:         93,093,001,736 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):          77,992,794,622 (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