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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:15:22                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              170/Montgomery                                            VRSN:      P
                                                        170-902/Conroe ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A            1,911,295,576        0.8903         2,146,799,479               26           19,575
           2           A            1,911,142,354        0.9524         2,006,659,339               27           11,678
           3           A            1,911,358,391        0.9407         2,031,846,913               26            7,465
           4           A            1,911,127,408        0.9878         1,934,731,128               25            3,598
           5           B               73,315,268        0.9983            73,440,116                6               27
           6           B               72,072,988        1.0045            71,750,112                7               14
           7           B               69,549,740        0.9012            77,174,589                4                9
           8           B               68,244,540        0.9030            75,575,349                3                5
           9           C              129,850,063        0.8784           147,825,664               82            7,513
          10           C              129,894,044        0.8977           144,696,495                7            2,412
          11           C              129,866,685        0.9573           135,659,339                8              451
          12           C              129,644,022        0.9760           132,831,990                8               99
          13           F1             470,937,511        1.0055           468,361,523               11              912
          14           F1             474,449,972        0.8930           531,298,961               12              187
          15           F1             471,156,097        0.9315           505,803,647               10               57
          16           F1             465,352,988        0.9678           480,835,904                6               13
          17           L1             242,972,266        0.9986           243,312,904                7            2,539
          18           L1             244,169,060        0.9054           269,680,870                8              404
          19           L1             243,920,614        0.9102           267,985,733                7               86
          20           L1             240,414,010        1.0133           237,258,472                5               16
  RANDOM TOTALS:                   11,300,733,597                      11,983,528,527              295           57,060
  CATG D1 EXCEPTION VALUES:            55,963,631                          55,342,616
 TOTAL TEST VALUES (4):            11,356,697,228                      12,038,871,143
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:               601,943,557
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:               11,356,697,228 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:              11,436,927,586 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:              12,640,814,700 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               11,759,584,391 (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