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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:00                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              123/Jefferson                                             VRSN:      W
                                                        123-908/Port Neches-Groves ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              187,454,400        0.9836           190,579,911              16            3,394         .004698784
      2           A              187,503,396        0.9372           200,067,644              16            2,187         .018356558
      3           A              187,471,394        0.9551           196,284,571              16            1,479         .001373019
      4           A              187,313,718        0.9920           188,824,312              16              910         .003441913
      5           F1              15,119,385        0.9804            15,421,649               7              202         .011936002
      6           F1              15,086,791        0.9233            16,340,075               6               85         .018065692
      7           F1              15,026,278        0.9856            15,245,818               6               40         .011727094
      8           F1              14,906,847        0.9558            15,596,199               5               14         .018628114
      9           L1              10,263,777        0.9776            10,498,954               7              319         .061323889
     10           L1              10,323,073        1.1502             8,975,024               6               65         .121539329
     11           L1              11,205,761        0.9963            11,247,376               5               17         .001090523
     12           L1               9,664,609        0.9236            10,464,063               3                6         .039865682
  RANDOM TOTALS:                 851,339,429                         879,545,596             109            8,718
  CATG D1 EXCEPTION VALUES:           96,380                              56,261
 TOTAL TEST VALUES (4):          851,435,809                         879,601,857
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           43,980,093
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            835,621,764 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             851,435,809 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            923,581,950 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           2,595,491,742 (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