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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:05:43                                       2004 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
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A           10,428,180,694        0.9924        10,508,041,812               50          119,044
           2           A           10,431,150,261        0.9947        10,486,729,930               50           56,964
           3           A           10,427,405,462        0.9988        10,439,933,382               49           29,788
           4           A           10,418,232,560        1.0086        10,329,399,722               50           11,116
           5           B            1,510,031,862        0.8909         1,694,951,018               44            4,371
           6           B            1,504,802,873        0.8182         1,839,162,641                7              330
           7           B            1,518,710,524        0.8915         1,703,545,176               10              127
           8           B            1,494,691,830        0.8452         1,768,447,504               10               55
           9           C              378,591,776        0.8791           430,658,373               37           18,153
          10           C              377,675,913        0.7144           528,661,692               26            3,256
          11           C              378,297,589        0.8620           438,860,312               23              875
          12           C              377,956,611        0.8042           469,978,377                8              160
          13           D3             326,531,850        0.7231           451,572,189               14           23,341
          14           F1           4,372,398,058        0.7853         5,567,806,008               32            8,664
          15           F1           4,376,636,003        0.8883         4,926,979,627               14            1,202
          16           F1           4,368,614,702        0.9220         4,738,193,820                6              261
          17           F1           4,368,543,730        1.0218         4,275,341,290                7               49
          18           L1           1,886,445,242        1.0152         1,858,200,593                8           19,547
          19           L1           1,885,929,480        0.9509         1,983,310,001                9            2,416
          20           L1           1,887,501,725        0.9322         2,024,781,941                8              571
          21           L1           1,884,488,046        0.9271         2,032,669,665                9               98
  RANDOM TOTALS:                   74,602,816,791                      78,497,225,073              471          300,388
  CATG D1 EXCEPTION VALUES:               678,180                             607,627
 TOTAL TEST VALUES (4):            74,603,494,971                      78,497,832,700
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:             3,924,891,635
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:              74,572,941,065 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:               74,603,494,971 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:              82,422,724,335 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               73,323,502,052 (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