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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:42                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              220/Tarrant                                               VRSN:      W
                                                        220-917/Castleberry ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               89,629,110        1.0152            88,287,145              16            1,779         .007017883
      2           A               89,627,952        1.0073            88,978,410              23            1,336         .003350496
      3           A               88,868,476        1.0093            88,049,615              24            1,049         .005906995
      4           A               89,204,859        1.0428            85,543,593              27              762         .013789357
      5           F1              14,085,095        0.9223            15,271,707               8              129         .023131869
      6           F1              14,105,151        0.9918            14,221,770               8               54         .023920893
      7           F1              13,906,014        0.9054            15,358,973               5               25         .045668865
      8           F1              13,976,181        1.0363            13,486,617               5               12         .006101410
  RANDOM TOTALS:                 413,402,838                         409,197,830             116            5,146
  CATG D1 EXCEPTION VALUES:            6,094                               6,094
 TOTAL TEST VALUES (4):          413,408,932                         409,203,924
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           20,460,196
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            388,743,728 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             413,408,932 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            429,664,120 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             386,494,306 (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