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DATE: 01/26/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:20:57                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              024/Brooks                                                VRSN:      W
                                                        024-901/Brooks County ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               11,232,653        0.8948            12,553,255               7              782         .008586173
      2           A               11,272,294        0.9053            12,451,446               7              422         .005766391
      3           A               11,192,279        0.8123            13,778,504               7              238         .026698477
      4           A               11,222,444        0.9171            12,236,881               7              139         .004790018
      5           D3              19,296,910        0.7868            24,525,813              10            3,628         .049137181
      6           G1             143,044,266        0.9368           152,694,562               7              121         .007091376
      7           G1             147,308,382        0.9743           151,194,070               6               41         .007313903
      8           G1             140,752,042        1.0653           132,124,324               5               18         .000503602
      9           G1             138,546,511        1.0196           135,883,200               4               10         .014554954
  RANDOM TOTALS:                 633,867,781                         647,442,055              60            5,399
  CATG J  EXCEPTION VALUES:       24,176,514                          24,988,176
  CATG D1 EXCEPTION VALUES:       38,634,380                          41,405,910
 TOTAL TEST VALUES (4):          696,678,675                         713,836,141
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           35,691,807
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            678,144,334 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             696,678,675 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            749,527,948 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             799,496,247 (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