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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:09:28                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              084/Galveston                                             VRSN:      W
                                                        084-901/Dickinson ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              276,010,513        1.0013           275,652,165              35            4,201         .029405438
      2           A              275,850,064        0.9249           298,248,528              44            2,448         .003462253
      3           A              275,701,192        0.9590           287,488,209              36            1,864         .002709548
      4           A              275,792,103        0.9861           279,679,650              23            1,187         .010943719
      5           C               25,760,257        0.9549            26,976,916               7            2,787         .015289919
      6           C               25,787,515        1.0023            25,728,340              15              869         .012822271
      7           C               25,741,549        0.9643            26,694,544              19              372         .009725155
      8           C               25,730,517        0.9669            26,611,353               6               50         .000377062
      9           F1              54,771,083        1.0086            54,304,068               7              335         .014887540
     10           F1              54,657,054        0.8614            63,451,421               8               82         .120318328
     11           F1              54,136,211        0.8345            64,872,632               6               23         .177646990
     12           F1              54,037,864        0.9081            59,506,512               3                6         .004681016
     13           L1              27,133,269        1.0498            25,846,132               8              443         .008835328
     14           L1              27,400,283        1.0360            26,448,150               6               78         .011023065
     15           L1              28,107,131        0.9909            28,365,255               7               18         .009058837
     16           L1              25,331,836        0.9913            25,554,157               2                4         .000019064
  RANDOM TOTALS:               1,531,948,441                       1,595,428,032             232           14,767
  CATG D1 EXCEPTION VALUES:        1,003,650                             989,212
 TOTAL TEST VALUES (4):        1,532,952,091                       1,596,417,244
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           79,820,862
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,516,596,382 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,532,952,091 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,676,238,106 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,733,703,735 (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