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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:35:26                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              018/Bosque                                                VRSN:      W
                                                        018-901/Clifton ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               37,365,918        0.9622            38,833,837              19              928         .012450440
      2           A               37,437,564        0.9534            39,267,426              15              536         .011089409
      3           A               37,351,037        0.9778            38,199,056              15              339         .010186953
      4           A               37,290,763        0.9586            38,901,276               9              187         .007227213
      5           D3              59,762,600        0.9669            61,808,460              20            2,369         .004501928
      6           F1               6,649,547        0.9619             6,912,930               7              116         .009414733
      7           F1               6,598,620        0.9989             6,605,886               6               48         .002010650
      8           F1               6,561,209        0.9626             6,816,132               5               21         .002024444
      9           F1               6,491,870        0.9877             6,572,714               3                6         .000820826
  RANDOM TOTALS:                 235,509,128                         243,917,717              99            4,550
  CATG J  EXCEPTION VALUES:       27,400,456                          27,053,198
  CATG D1 EXCEPTION VALUES:       10,959,310                           9,663,597
 TOTAL TEST VALUES (4):          273,868,894                         280,634,512
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           14,031,726
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            266,602,786 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             273,868,894 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            294,666,238 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             361,033,122 (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