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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:43:09                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              054/Crosby                                                VRSN:      W
                                                        054-903/Ralls ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                6,714,930        1.0043             6,686,179              11              324         .198731510
      2           A                6,689,027        0.8828             7,577,058              10              174         .048336688
      3           A                6,678,639        1.0260             6,509,395              10              111         .047976703
      4           A                6,669,843        0.9819             6,792,793              10               63         .005471225
      5           D3               5,061,110        0.9179             5,513,792              20            1,288         .281323490
      6           F1               1,026,837        0.7069             1,452,592               6               54         .253531865
      7           F1               1,018,167        1.0782               944,321               5               18         .015882249
      8           F1               1,133,918        0.9319             1,216,781               4                8         .006457722
      9           F1                 864,625        1.0144               852,351               2                3         .000217129
     10           G1              12,625,728        1.0961            11,518,774              14               19         .011472008
  RANDOM TOTALS:                  48,482,824                          49,064,036              92            2,062
  CATG J  EXCEPTION VALUES:        2,534,065                           2,287,560
  CATG D1 EXCEPTION VALUES:       18,836,260                           8,191,417
 TOTAL TEST VALUES (4):           69,853,149                          59,543,013
 MARGIN OF ERROR PERCENT:          5.0000006
 MARGIN OF ERROR VALUE:            2,977,151
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             56,565,862 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             62,520,164 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              69,853,149 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):              72,500,034 (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