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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:33                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              072/Erath                                                 VRSN:      W
                                                        072-903/Stephenville ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               95,667,537        0.9705            98,575,515              78            1,820         .012507259
      2           A               95,704,267        1.0123            94,541,408              54            1,086         .006314912
      3           A               95,669,291        1.0121            94,525,532              62              815         .005394611
      4           A               95,563,225        1.0064            94,955,510              47              469         .004090476
      5           D3             164,547,940        0.9390           175,237,423              43            4,791         .038780831
      6           F1              37,162,712        0.8891            41,798,124              14              329         .031370180
      7           F1              37,262,662        0.8398            44,370,876              15              116         .117304417
      8           F1              37,729,657        0.9420            40,052,714              11               45         .046170471
      9           F1              35,781,306        1.0219            35,014,489               6                9         .044274418
     10           L1              17,812,094        1.0292            17,306,737               9              399         .023743645
     11           L1              17,898,272        0.9399            19,042,741               7              107         .144640461
     12           L1              18,419,927        1.0430            17,660,524               9               34         .009032591
     13           L1              17,092,974        1.0452            16,353,783               4                7         .000203836
  RANDOM TOTALS:                 766,311,864                         789,435,376             359           10,027
  CATG D1 EXCEPTION VALUES:       14,774,610                          12,142,355
 TOTAL TEST VALUES (4):          781,086,474                         801,577,731
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           40,078,887
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            761,498,844 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             781,086,474 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            841,656,618 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             882,867,168 (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