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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:05:20                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              101/Harris                                                VRSN:      P
                                                        101-912/Houston ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A           10,443,787,037        0.9832        10,622,240,680               50          119,044
           2           A           10,446,761,049        0.9888        10,565,090,058               50           56,964
           3           A           10,443,010,645        0.9935        10,511,334,318               50           29,788
           4           A           10,433,824,015        1.0072        10,359,237,505               50           11,116
           5           B            1,529,303,479        0.8234         1,857,303,229               58            4,371
           6           B            1,524,007,755        0.7809         1,951,604,245                8              330
           7           B            1,538,092,902        0.8826         1,742,684,004               11              127
           8           B            1,513,767,672        0.8392         1,803,822,297               11               55
           9           C              378,777,715        0.7390           512,554,418               40           18,153
          10           C              377,861,402        0.7101           532,124,211               27            3,256
          11           C              378,483,384        0.8559           442,205,145               20              875
          12           C              378,142,238        0.8042           470,209,199                8              160
          13           D3             331,859,320        0.7231           458,939,732               14            1,459
          14           F1           4,427,497,293        0.7853         5,637,969,302               32            8,664
          15           F1           4,431,788,643        0.8483         5,224,317,627               13            1,202
          16           F1           4,423,666,260        0.8353         5,295,901,185                7              261
          17           F1           4,423,594,394        1.0165         4,351,789,861                7               49
          18           L1           1,989,759,573        0.9568         2,079,598,216                9           19,547
          19           L1           1,989,215,565        0.9509         2,091,929,293                9            2,416
          20           L1           1,990,873,916        0.9133         2,179,868,516                8              571
          21           L1           1,987,695,187        0.9271         2,143,992,220                9               98
  RANDOM TOTALS:                   75,381,769,444                      80,834,715,261              491          278,506
  CATG D1 EXCEPTION VALUES:               609,410                             539,546
 TOTAL TEST VALUES (4):            75,382,378,854                      80,835,254,807
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:             4,041,762,740
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:               75,382,378,854 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:              76,793,492,067 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:              84,877,017,547 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               73,501,916,881 (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