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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:11:15                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              092/Gregg                                                 VRSN:      W
                                                        092-908/White Oak ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               37,309,190        0.8867            42,076,452              10              516         .015715744
      2           A               37,204,075        0.9431            39,448,706              15              354         .008216293
      3           A               37,237,544        0.9456            39,379,805               8              283         .005364664
      4           A               37,160,578        0.9726            38,207,462              33              181         .007492473
      5           D3              14,038,590        1.0355            13,557,306              10              962         .137654510
      6           G1              18,523,220        0.9840            18,824,411               6               90         .004050298
      7           G1              18,256,820        1.0004            18,249,520               6               30         .000693276
      8           G1              18,235,240        1.0492            17,380,137               5               21         .002843761
      9           G1              17,918,660        0.9827            18,234,110               5               13         .002511496
  RANDOM TOTALS:                 235,883,917                         245,357,909              98            2,450
  CATG D1 EXCEPTION VALUES:          772,670                             772,310
 TOTAL TEST VALUES (4):          236,656,587                         246,130,219
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           12,306,511
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            233,823,708 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             236,656,587 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            258,436,730 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             269,565,027 (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