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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:15:24                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              170/Montgomery                                            VRSN:      P
                                                        170-903/Montgomery ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              426,236,145        0.9084           469,216,364               26            4,566
           2           A              426,279,476        0.9350           455,913,878               19            2,061
           3           A              426,275,378        0.9849           432,810,821               23            1,256
           4           A              426,300,172        0.9279           459,424,692               17              653
           5           C               48,813,533        0.9411            51,868,593               24            5,134
           6           C               48,761,446        0.9297            52,448,581               13            1,439
           7           C               48,827,940        0.8843            55,216,488               13              589
           8           C               48,666,782        0.9012            54,002,199                7              252
  RANDOM TOTALS:                    1,900,160,872                       2,030,901,616              142           15,950
  CATG D1 EXCEPTION VALUES:            16,764,430                          15,388,410
 TOTAL TEST VALUES (4):             1,916,925,302                       2,046,290,026
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               102,314,501
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:                1,916,925,302 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:               1,943,975,525 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:               2,148,604,527 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                2,041,430,072 (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