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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:38                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              020/Brazoria                                              VRSN:      W
                                                        020-905/Brazosport ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              409,231,154        0.9688           422,410,357              57            6,391         .001288461
      2           A              409,038,034        0.9792           417,726,750              57            3,764         .002457301
      3           A              409,117,047        0.9879           414,127,996              57            2,585         .002945547
      4           A              409,027,415        0.9970           410,258,190              57            1,484         .004917722
      5           F1              71,921,313        0.9335            77,044,792              10              620         .006602210
      6           F1              72,165,600        0.8581            84,099,289              10              171         .038718904
      7           F1              72,759,322        0.9120            79,779,958               6               61         .011338674
      8           F1              70,531,947        0.9635            73,203,889               5               14         .015869920
      9           L1              57,321,160        0.9864            58,111,476               7              670         .000713043
     10           L1              57,832,196        1.0229            56,537,488               7              152         .001563287
     11           L1              58,455,631        0.9669            60,456,749               6               48         .003931670
     12           L1              55,354,291        0.9728            56,902,026               5               13         .003191115
  RANDOM TOTALS:               2,152,755,110                       2,210,658,960             284           15,973
  CATG J  EXCEPTION VALUES:       85,871,587                          93,404,812
  CATG D1 EXCEPTION VALUES:        2,683,940                           2,494,098
 TOTAL TEST VALUES (4):        2,241,310,637                       2,306,557,870
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          115,327,894
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          2,191,229,976 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           2,241,310,637 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          2,421,885,764 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           6,212,608,465 (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